Circuit Project Electronic

The 34063 is configured as a voltage inverter with current limiting resistors on pin 7. Pin 5 is the voltage detect pin and together with its 1.25V internal reference, a 240:1 voltage step-up ratio is configured giving an output voltage of around 300V. The emitter on pin 4 of the 34063 drives an IRF540 [...]

Portable iPod charger that you can use while away from your computer. The circuit is based around an MC34063 switchmode regulator. This has high efficiency so that there is very little heat produced inside the box, even when delivering its maximum output current. The circuit is more complicated than if we used a 7805 3-terminal [...]

The inverting converter is the power unit to make the negative output voltage with the positive input voltage. The converter which was made this time makes -2V to -10V output voltage with the input voltage of +12V. Because it makes the limitation value of the input electric current about 1.3A, the maximum with the input [...]