Parametry elektroniky z Ali & Ebay...
Převodník USB > TTL
https://www.aliexpress.com/item/32668866076.html?spm=a2g0s.9042311.0.0.27424c4dlav93N
Features:
Built-in USB to TTL Transfer chip.
Designed to be used for USB to TTL electronic projects.
TTL interface output, easy to connect to your MCU.
Status LED.
Dual 3.3V and 5V Power output, work with 3.3v and 5v target device.
Size: 55mm x 16mm
- 3 and 5V by a short circuit risk selection;
- not only has the power light PWR, there TXD and RXD indicator, whether the product is easy to learn and intuitive to work in the absence of the instrument in the case;
- new original CH340G chips, the chips are recommended STC official USB to TTL chips will not appear due to different driver / different computer as a result of incompatibilities!
CH340 module/ USB switch TTL/ USB transfer RS232/ over PL2303/ STC downloader/ 9 Brush board STC official download chip. Perfectly compatible with all Series MCU STC will not be because of the different drivers that would lead to problems like PL2303 can not download the program. Ultra-stable.
Modul dobíječky Li-Ion s měničem StepUp
100% Brand New and High Quality
Can be used for multimeter, converted to lithium battery charging
For example: VIN+Port input 5V solar panels, BAT+port can output 4.2V to charger 3.7V 18650 battery
Note: The OUT+Port can output an adjustable voltage.
Specifications:
Input voltage: 4.5-8V DC
Output voltage: 4.3-27V DC (Continuously adjustable)
Charging voltage: 4.2V DC
Charging current: Max. 1A
Discharging current: Max. 2A
Size: 3.3x2.3cm/1.3x0.91"
Quantity: 1 Pcs
Modul StepUp s výstupem USB
0.9V ~ 5V to 5V 600MA USB Output charger step up Power Module Mini DC-DC Boost Converter
Description: DC / DC boost controller chip onboard ultra-compact PFM control
Enter any DC voltage of 0.9V ~ 5V, can be stable output 5V DC voltage, output current of 500 ~ 600MA with two AA batteries input to a single AA battery-powered output current 200ma so, for the mobile phone, camera , single-chip, digital products supply. Stable output 5V DC voltage
Onboard USB female, can be directly powered USB interface device with USB female versatile
On-board input voltage indicator
PCB size: 34 (mm) x16.2 (mm) ultra-small size, installed in a variety of small equipment
Modul jednoduché PowerBanky
Panelový CC CV zdroj StepDown
This is a DC-DC step down converter power supply that converts 6V-32V to 0-32V.
Designed with a high accuracy LCD display for convenient reading voltage or current.
It can be used as a step down converter, and input voltage should be >1V higher than output.
Maximum power is 160W, and working within 120W is suggested, lower power when voltage difference is large.
Pay attention to power tube temperature, and enhance heat dissipation(it has fan terminal) if it is over 60°.
Specifications:
Input Voltage: DC 6V-32V
Output Voltage: DC 0-32V (continuously adjustable)
Maximum Output Current: 5A
Maximum Efficiency: 95%
Maximum Power: 160W
Resolution: 0.01V, 0.01A
Short Circuit Protective: YesReverse Input Protective: Yes
Output Backflow Protective: No, add a diode if use for charging
Size: 79*43*46mm/3.11*1.69*1.81"
Převodník 0-5V na 4-20mA
Voltage switch current module can convert 0-5V voltage signal into 4-20ma current signal;
In the process of signal transmission circuit voltage signal will increase transmission distance becomes weak,
the transmission can be avoided using weak electric current signal.
ower supply voltage range of DC 12V~24V
the input voltsge signal 0~5V.
the output current 4-20ma.
zero and span can be adiusted (potentiometer adjustment).
with the isolated nature of the non-optically isolated.
module size :5.5*2.5cm
Modul StepUp 0.9-5V na 5V
1.Input Voltage:0.9-5V;output voltage:5V
2.Maximum Output Current:480mA
3.Starting Up Voltage:0.8V;output current:7mA
4.Input Voltage:1-1.5V;output voltage 5V;current 40-100mA
5.Input Voltage:1.5-2V;output voltage 5V;current 100-150mA
6.Input Voltage:2-3V;output voltage 5V;current 150-380mA
7.Input Voltage:>3V;output voltage 5V;current 380-480mA
8.Operating Frequency:150KHz
9.Typical Conversion Efficiency:85%
10.Pin Space:2.54mm
11.Size:11*10.5*7.5mm
1.Input voltage should be no more than rated voltage,or the module will be burnt
2.Input power should surpass output power,or output voltage will be less than rated voltage
3.Output load should be no more than rated load,or output voltage will be less than rated voltage
Zdroj záporného napětí
The reverse voltage module MC34063A_NV is a chip based on MC34063A for providing reverse voltage, negative voltage modules. Capable of converting + 5V voltage to -5V voltage output. The output voltage can be adjusted by adjusting the potentiometer according to the requirements.
Technical Parameters:
Input voltage range: 3.6V-36V.
Output voltage range: negative 1.5V to negative 36V. Output voltage regulation characteristics; load regulation rate of less than 5%.
Output current. The IC of the module is 1.5A internal switch, but for safety and heat considerations, it is recommended that the load power of this module is less than 0.5W. That is, the output negative 5V, the load within 100MA, the proposed 50MA.
Other parameters:
Using single-chip embedded technology.
Input positive voltage, output negative voltage.
Easy to operate, you can adjust the output voltage through the potentiometer.
The module is small, easy to carry and use a variety of occasions.
Note: the higher the negative pressure, the load capacity will be relatively down.
Modul StepDown 12-24V na 1.8-12V
Description:
1.Input Voltage:DC 4.5-24V
2.Output Voltage:integration adjustable and fixed output,back side can choose fiexd output voltage
3.Adjustable Range:0.8-17V,fixed voltage (1.8V 2.5V 3.3V 5V 9V 12V)
4.Output Current:3A (max),actual testing input 12V output 1.5A
5.Transform Efficiency:97.5%(max) (6.5 to 5V 0.7A)
6.Switch Frequency:500KHz
7.Output Ripple Wave:20mV (12V to 5V 3A) 20m band width
8.Operating Voltage:-40 Celsius-85 Celsius
9.Output Overvoltage Protection:no
10.Static Current:0.85MA
11.Load Adjust Rate:±1%
12.Voltage Adjust Rate:±0.5%
13.Dynamic Response Speed:5% 200uS
14.Output Short Circuit Protection:yes
15.Input Transposition Protection:no
16.Enable Control:yes
17.Connecting Type:soldering
18.Input Way:soldering
19.Output Way:soldering/pin
20.Soldering Hole Space:2.54mm
Panelový napájecí zdroj DPS5005
CC CV Programmable Control Supply Power Module DPS5005
General Information:
The constant voltage and constant current programmable control power supply module put the collection of analog integration and digital control functions in one. Its adjustable output voltage range is 0-50.00V, step by 0.01V. Its adjustable output current range is 0-5.000A, step by 0.001A. This module has power-down stored function and can store 10 groups preset value. And it also has the function of extracting quickly two groups stored value. Compared with the traditional analog power supply, it is more convenient to quickly extract the voltage or current required. LCD display on the module has the function digital voltmeter and ammeter. You can view the preset voltage, input voltage, output voltage, the preset current, output current, output power, etc. on the output state remind area, you can see that output opens or not, the state of constant voltage and constant current, output is normal or not, the key is locked or not, and the current data groups that is being used. On the setting data interface, you can adjust overvoltage value, overcurrent value, over-power value, data set and LCD brightness. This module has many advantages, small size, advanced function, good visual effect, high operability, high-precision, being used independently, being inset into the device and been widely applied.
Technical parametersInput voltage range: 6.00-55.00V Output voltage range: 0V-50.00V
Output current: 0-5.000A Output power range: 00.00-250.0WProduct Weight: about 113g Product Dimension: 79*43*48(mm) (L*W*H)
Open size: 71mm*39mm Output voltage resolution: 0.01VOutput current resolution: 0.001A Output Voltage accuracy: ± (0.5% + 1 digit)
Output Current accuracy: ± (0.5% + 2 digits)
NOTE: You must make sure that the input voltage is 1.1 times higher than output voltage. Under large current circumstances, pay attention to heat elimination.
Modul měřidla 0-100V DC
Napájecí napětí: 4-40V
Working current: < 20 ma
Display: 0.28 "LED
Installation dimensions: 30 * 11.7 * 11.7 mm
The installation hole: 23 * 10 mm
Speed: 200 ms/or times
The accuracy of measurement: 3 ‰
Panelový wattmetr
Features:
A.Function
1.Electrical parameter measurement function (voltage, current, active power, energy)
2.Voltage alarm function (over voltage alarm threshold, backlight and voltage flashing to alarm).
3.The reset function of energy key.
4.Store data when power off.
5.Large-screen LCD (display voltage, current, active power, energy at the same time)
6.Backlight function.
B.Appearance and Key function
I. Display Interface
Display interface is large screen LCD, it can display voltage, current, power, energy parameters at the same time.
II. Display format
Power: test range: 0~2k
Within 1KW, the display format is 0.0~999.9W;
1KW and above, the display format is 1000~2000W.
Energy: test range: 0~9999kWh
Within 10KWh, the display format is 0~9999Wh;
10kWh and above, the display format is 10~9999kWh.
Voltage: test range: 6.5~100V
Display format: 6.50~99.99V
Current: test range: 0~20A
Display format: 0.00~20.00
III. Key
Backlight control
Short press the key to turn on or off the backlight, the backlight has memory function, it can store the on or off state when power off.
Reset energy
Step1: Long press the key until the power display area display "CLr", then release the key.
Step2: At this moment, the energy is flashing to prompt this is the energy reset state, if short press the key again, then the energy value is cleared and exit the reset flashing state.
Step 3: If there is no operation within 5 seconds, it means the energy value is not cleared and will exit the reset state.
Set voltage alarm threshold
Step1: Long press the key until the power display area display "SET", then release the key.
Step2: After enter this state, the voltage area display the current high voltage alarm value, the current area display the current low voltage alarm value and the last digit begin to flash, then you can short press to plus 1, when there is no operation over 3 seconds, it will switch the digit position automatically, from the high voltage alarm value to the low voltage alarm value, there are total six digits, the range of the voltage alarm threshold is 6.5~99.9V;
Step3: After finish the setting, long press the key until the screen display "PASS",that means you set successfully and will exit the setting state automatically.
C. Precautions
1. This module is suitable for indoor, please do not use outdoor.
2. Applied load should not exceed the rated voltage, current.
3. Wiring order can’t be wrong.
D. Specification parameters
1. Working voltage: 6.5~100VDC
2. Test voltage: 6.5~100VDC
3. Rated power: 20A/2000W
4. Measurement accuracy: 1.0 grade
Panelové měřidlo U/I
Working voltage of Meter itself: DC 4 - 30V
(The maximum input voltage can not exceed 30V. Otherwise the meter will be burned)
Working current of Meter itself: ≤20mA
Voltage Measuring range: DC 0 - 100V
Current Measuring range: DC 0 - 10A
Voltage resolution (V): 0.1V
Current resolution (A): 0.01A
Measure accuracy: 1% (± 1 digit)
Display: 0.28" digital tube, Two color blue and red
Refresh rate: about 300mS / times
Dimensions: 48mm*29mm*26mm
Operation Temp: -10°-+65°
Modul StepUp 2-24 na 2-28V, 2A
LC SX1308 booster module carrying SX1308 chip, its packagnig is small, and high efficiency. The output power can be adjust, maximum can arrive 28V and its interior integrate the lowest RDS internal resistance 100mΩ metal oxide semiconductor field effect transistor (mosfet), which can realize large current output of up to 2A. It widely used in 3G network products, digital products, mobile power supply,battery power supply, equipment, etc.
Oscillation frequency 1.2MHz
efficiency is as high as 95%
Circuit has short circuit protection, overheating protection function
10k to adjust potentiometer, adjust the output voltage
Maximum input voltage: DC 2-24V
Maximum output voltage: DC 2-28V
Switching frequency: 1.2MHz
Maximum current output: 2A
Modul StepDown CC/CV
The Features:
1. The Fixed turn the lamp current to 0.1 times the value of the constant current (at the when 2 identify been the 'is full);
2. Increased input reverse polarity for protection, diode;
3. Using dedicated reference for IC, and high - precision from the resistor, so that the constant current is more stable, (20 degrees to 100 degrees, the constant current 1 a, when the temperature drift of less than 1%).
Particularly suitable for the LED driver
* High - power LED constant current drive
* Lithium 'charger (o ferroelectric)
* 4 v, 6 v, 12 v, 14 v, 24 v 'charger
* Nickel cadmium, Nickel metal hydride 'pack charger
For * Solar panels and wind turbines
Specifications:
* the Module Properties: non - isolated constant current and voltage of the Module
* Rectification: non - synchronous Rectification
* Input voltage: 7 v - 35 v
* the Output voltage: 1.25 V - 30 V
* the Output current: adjustable maximum 3 a
* Conversion efficiency: 92% (the highest)
* Switching frequency, 150 KHZ
* the Output ripple: 50 mv (Max) 20 m bandwidth
* the Load Regulation: plus or minus 0.5%
* Voltage Regulation: plus or minus 2.5%
* Operating Temperature: - 40 ° to + 85 °
'the use:
* Make sure of the voltage and current of the 'you need to charge* Adjust the constant voltage potentiometer to make the output voltage same to the charge voltage
* Potentiometer Adjustment Direction: Clockwise (happens), counterclockwise (decrease)
* Use the multimeter in 10 a current scale to measure the output short - circuit current, and adjust the current potentiometer to make sure the output current to the expected charging current value
* The charge current of transfer lamp is The default 0.1 times of The charging current (constant current value)
* Connected to the 'and try to charging (for previous five steps, the module input terminal is Connected to the power source, the output load is NOT Connected to batteries).
LED Constant Current Driver Use:
* Make sure operating current and Max operating Voltage of the LED you need to drive.
* Adjust the constant voltage potentiometer to make sure the output voltage is up to the LED Max operating voltage.
* Use the multimeter in 10 a current scale to measure the output short - circuit current, and adjust the current potentiometer. To make sure the output current to the expected LED operating current.
* Join the LED test (For the above three steps, the module input terminal is connected to the power source, the output load is NOT connected to the LED).
The scope of application:
Charging for lithium ion batteries: the when the lithium ion 'voltage is low. If use the constant voltage Charging directly. Due to pressure is too large, leading to the' damage. So from the beginning to use the constant current Charging. When Charging the to a certain, automatic switch back to the constant voltage Charging.
Charging curve as to: red is current, blue is voltage.
Modul DC/DC StepDown
Specification:
100% brand new and high quality.
Module Properties: Non-isolated step-down module
Rectification: Synchronous rectification
Input voltage: DC 4.75V-23V
Output voltage: DC 1.0V-17V (Adjustable, Output < Input)
Output current: Rated current 1.8A (3A MAX, can not be prolonged)
Conversion efficiency:96%(highest)
Switching Frequency: 340KHz.
Output ripple:30mV(no-load)
Load regulation:±0.5%
Voltage regulation:±2.5%
Operating Temperature: Industrial (-40° ~ +85°)
Short circuit protection: No(Please do not short-circuit)
Input Reverse protection: No(Can not be reversed)
Dimension: approx.17mm*11mm*3.8mm(L*W*H)/17*11*3.8 Supper mini board
NOTE:This can't be used to step up Voltage. Output voltage is always smaller than input!
Package Include:4x Power Supply Module
Modul DC/DC StepDown s HT7463
Input up to 55V, maximum efficiency 96%, output 5V and maximum current 600mA.
Can turn off the module.It has many advantages such as low power consumption, low impact and anti-interference ability.
It is widely used in automobile, electric vehicle, communication equipment, ship, industrial control, LED lighting field.
Specification:
Input voltage: DC 6V-55V
Output voltage: 3.3V/5V/9V/12V (optional)
Output current: 600mA
Conversion : 95%
Output ripple: Output accuracy: ±0.1V
Working temperature: -40 ° C ~ +85 ° C
Relative humidity: 20-90%
Switching frequency: 500KHZ
Size: 17*17*5mm (L*W*H)
Module weight: 2g
Úprava modulu 5V pro jiná napětí:
Modul 5V má bočník FB složený z odporů R1 (16k) a R2 (120 a 300k par). Pokud na DPS ponecháme jako R2 pouze 300k, dostaneme Uout 15.8V, pokud ponecháme jen 120k, Uout bude 6.8V. Pro 12V musí být R2 226k (při R1 = 16k).
Modul DC/DC StepDown s MP1584
Application:
1. Model Name: Ultra-small DC-DC step-down module
2. Input voltage: 4.5-28V
3. Output Voltage: 0.8-20V
4. Output current: rated current 3A(MAX).
5. Switching Frequency: 1.5MHz (highest), typical 1MHz
6. Output Ripple: < 30mV
7. Efficiency: 96% (max)
8. Operating temperature: -40 Celsius to +85 Celsius
9. Size: 22mm*17mm*4mm
Modul DC/DC StepDown s LM2596 (60V)
Description:
100% brand new and high quality
Type: DC/DC Constant Current / Constant Voltage
Size: (L*W*H)4.80*2.40*1.4cm/1.89"*0.94"*0.55"
Input Voltage: 5V-57V input voltage must be higher 2V than the output voltage
Output Current: rated current 2.5A/ 3A MAX ( Heat-sink Needed)
Output Voltage: 1.25-30V (Adjustable)
Output Power: 15w max at maximum voltage
Output short circuit protection: Yes, constant current (constant current setting values)
Input reverse polarity protection: Yes,
Constant current range: 0.2-3A (adjustable, default transferred 1A)
Turn lamp current: constant current value * (0.1), turn the lamp current constant current value Linkage
Benefits:
Stepless adjustment of the output voltage
Stepless adjustment of the output current
LED indicator, Red under load / Green on load free
Multiturn potentiometer with long life
Up to 1.5V (Typ. 1.16V) difference between the input and output voltages
Up to 2.5A output current
Very low power consumption at idle, about 10mA (0.01)
Temperature protection
Input voltage to 60V
High stability of the output voltage
High efficiency
No need additional cooling to 2.2A
High frequency DC/DC conversion, leading to size reduction of the device
Application:
Charger for all batteries in the range 1.23V ~ 28V, only set the precise battery voltage and charging current
High conversion when used in car
Adjustable laboratory voltage source
LED driver with constant current
Dimming devices
Laboratory power supply
Modul DC/DC StepDown s XL4015 a displejem
Contains the voltmeter, ammeter, power meter, USB interface for charging the digital products.
Note:
1.When you use the product, the module inputs and outputs to be isolated from ground.
2.USB output voltage is consistent with the module, not a fixed 5V output. When charging for digital equipment, make sure USB output voltage is 5V.
3.Some customers report: “The module can not adjust the output voltage is always equal to the input voltage.” When you encounter this problem, please counterclockwise rotation of the “voltage potentiometer” 10 laps or more, then use the module you can adjust the output voltage. Because the factory default output voltage of about 20V.
1.Input voltage range:5-36V DC
2.Output voltage range:1.25-32V DC adjustable
3.Output current: 0-5A
4.Output power: 75W
5.High efficiency up to 96%
6.Built in thermal shutdown function
7.Built in current limit function
8.Built in output short protection function
9.Input reverse polarity protection: None (if required, high current diode in series with the input).
10.L x W x H =68.2×38.8×15mm
11.Weight: 39g
Application
1.Use as a step-down modules with overcurrent protection
Usage:
(1) Adjust the right button so that “OUT” LED lighted, Digital meter shows the value of output voltage ,adjust the “voltage potentiometer” so that the output voltage reaches the value you want.
(2) Adjust the right button so that Digital meter shows the value of output current;Wire shorted output terminal, then adjust the “current potentiometer” so that the output current reaches a predetermined overcurrent protection value. (For example, the Digital meter displays the current value of 4A, then you can use the module to a maximum current of 4A)
(3) Connected to the load.
2.Use as a battery charger
(1) Make sure you need to charge the battery float voltage and charging current; (if lithium parameters 3.7V/2200mAh, then the float voltage is 4.2V, the maximum charging current 1C, ie 2200mA)
(2)Under no-load conditions, adjust the “Voltage potentiometer” so that the output voltage reaches the float voltage; (if to 3.7V rechargeable lithium battery, the output voltage can be adjusted to 4.2V)
(3)Adjust the right button so that Digital meter shows the value of output current;Wire shorted output terminal, then adjust the “current potentiometer” so that the output current reaches a predetermined Charging current value.
(4)Charge turn lamp current factory default is 0.1 times the charging current; (Battery during charging current is gradually reduced, if the charge current setting is 1A, then when the charge current is less than 0.1A, blue lights turned off, the green light is on, which means that the battery is fully charged)
(5)connected to the battery charge.
(1,2,3,4 steps as: Output is unloaded, do not connect the battery)
3.Use as a LED constant current driver module
Usage:(1)Adjust the “voltage potentiometer” so that the output voltage reaches the value you want.
(2)Adjust the right button so that Digital meter shows the value of output current;Wire shorted output terminal, then adjust the “current potentiometer” so that the output current reaches a predetermined LED operating current.
(3)Connect LED, work.
(1,2 steps as: Output is unloaded, do not connect LED)
Voltmeter and ammeter calibration method:
Module with manual calibration function can correct display precision voltage and current, if you think the current voltage and current accuracy to meet the requirements, do not perform the following operations.
(1) Output voltage calibration steps
Step 1, adjust the right button so that “OUT” LED lighted, Digital meter shows the value of output voltage; Press the right button for more than 2 seconds, release, Digital meter and “OUT” LED flashes in synchronization so that you enter the output voltage calibration mode.Step 2, press the right button (normal speed), the voltage value is adding up a unit; Press the left button, minus a unit; Due to a unit is less than 0.1V, the minimum voltage display to 0.1V, so you need to continuously press 1-5 times to see the voltmeter change 0.1V, how many times voltmeter change 0.1V by pressing the key, depending on the current display voltage, the higher the voltage, the fewer the number of press.
Step 3, press the right button for more than 2 seconds, release, to exit the output voltage calibration mode. All parameters set to automatically power down to save.
(2) Input voltage calibration steps
Step 1, adjust the right button so that “IN” LED lighted, Digital meter shows the value of input voltage; press the right button for more than 2 seconds, release, Digital meter and “IN” LED flashes in synchronization so that you enter the input voltage calibration mode.
Steps 2 and 3, consistent with the output voltage calibration method.
Step 1, adjust the right button so that Digital meter shows the value of output Current. Press the right button for more than 2 seconds, release, Digital meter flashes in synchronization so that you enter the output current calibration mode.
Step 2,Connected to the load, ammeter in series, adjust the right and left button to change the display of digital meter, so that is consistent with the ammeter display.