It can input non-stable alternating current and output adjustable voltage. Its minimum output voltage is 1.23V and the maximum output current is 3A. LM2596 contains fixed frequency oscillator (150KHz) and benchmark voltage stabilizer (1.23 V), and has perfect protection circuit, current limit, heat cut-off circuit and so on. This circuit has the advantages of high efficiency and low heat. It can make full use of the various idle transformers around you to make the stable voltage stable power supply.
The non-stationary AC voltage input of J1 was rectified by d1-d4, C1 and C2 filtered as the input voltage of LM2596 output the stable DC voltage from J2 through the LM2596. C3, C4 is the output filter capacitance. R2 and LED2 constitute the indicator circuit. LED1 is 8mm white LED. Its brightness can roughly indicate the output voltage. If the brightness is too bright, you can increase the resistance of R2 properly. L1 is a special inductance, which acts as an energy conversion. D5 is the Schottky diode, which plays a continuous role in the circuit. C5 interferes the circuit. The output voltage of R1 and W1 can be calculated by the following formula: Vo=1.23(1+W1/R1)
Description
5V 4-Channel Relay interface board
Optical isolation on each channel
Drive directly from Arduino etc.
High power relays for each channel: 250V 10A AC
Indication LED for each output
Module size: 70 x 53 x 20mm
Description
* on-board AMS1117-3.3 chip
* the input voltage range of 4.75V-12V
* on-board power indicator light, indicate power is turned
* board size: 18.5 (mm) x10.5 (mm)
Features:
* Dual measurement of AC voltage, AC current with AC current transformer
* Voltage Measuring Range: AC 80 ~ 300V
* Current Measuring Range: AC 0.1 ~ 100A (Current in excess of 1A is recommended)
* Display backgroud color & Type: Blue & LCD
Charge module- Linear charging.
Current- 1A adjustable.
Charge precision- 1.5%.
Input voltage- 4.5V-5.5V.
Full charge voltage- 4.2V.
Led indicator- red is charging blue is full charged.
Input interface- mini USB.
Work temperature- -10 to +85.
Inversed polarity- NO.
DIY an output adjustable vehicle power supply, connect the 12V input, and output could be 14-35V(adjustable freely), However, the output voltage can not be less than the input voltage.
Car laptop power supply: connected to 12V power supply, output voltage regulation as your notebook need.
Boost charger. You can use the 12V power supply to charge battery more than 12V, for example, 24V batter