Circuit Project Electronic

The supply receives -20 V from the rectifier/filter which is fed to the collector of the Darlington pnp pass transistor, a TIP105. The base drive to the TIP105 is supplied through resistor R5. The base of the TIP is driven from Vz terminal at pin 9, which is the anode of a 6.2-V zener diode [...]

If friends with look for Mini power supply 6V sizes. That give negative voltage. I begs for to advise this circuit. It has prominent small-sized point and light weight. Because do not use Transformer. But still can use current get 0.07Amp not exceed and when see the circuit. Think use [...]

Today I seeks Negative power supply units Circuit 9Volt sizes give friends. See in rows think ? circuit character resemble with positive voltage supply the other only get back to the direction of the electricity only. When use Transistor 2SC1061 or TIP31 as a [...]