Transistor Variable power supply 1A, 0-30V project with PCB. Using transistor boost current to 1A. No IC. No Zener diode. But steady voltage.
All electronics devices require power. We have a lot of power supply circuits for you to choose suitably. Also, the battery is one of the important sources. It needs a power supply, too. To charge them work well. And, We love renewable energy, clean, and long with solar.
- Learn the power supply circuit
- How Unregulated power supply works
- What is the switching mode supply, many types?
What is more? See below the lists
Note: If you do not see the power supply circuit that you need. Please use the search box.
This is LM317 voltage selector power supply projects can select output 1.5V,3V,4.5V,5V,6V,9V at 1.5A current. you can use as as battery, so saving.
If you need a dual power supply. But you only have a single supply source. So should build this power supply splitter circuit.
The Battery full charge alarm circuit for a general battery charger. It is simplified circuit and cheap, use one transistor BC557 and display with 2 LED.
It can charge any size of the Gel cell batteries and extend the life of the Gel Cell battery. While the circuit is running, the LED indicates charging.
In a normal circuit, the general LM350 regulator has a start voltage of 1.25V. But this circuit is special that start of 0-volts. We use only one IC and a few other components. So cheap and easy for you.
Modify cheap mobile phone charger inside is simple DC switching regulator circuit and can apply many ways, such as DC power supply