13 8 Regulated Power Supply Schematic

You are now ready to couple together all the parts of the power supply to make one complete unit the main wiring diagram is shown in figure 6.

13 8 regulated power supply schematic. The voltage is adjustable and it even has remote voltage sensing which automatically compensates for any voltage drop that occurs between the power supply and the load transceiver. There s a really good 13 8 volt 30 amp power supply circuit diagram in the arrl handbook with clear instructions on how to build it. The optional circuit in figure 2 will give you that extra peace of mind when a very expensive radio is used with the power supply. 2 x 15 volt 12 amps.

The optional circuit in figure 2 will give you that extra peace of mind when a very expensive radio is used with the power supply. This is very important. Remember to isolate the transistors from the chassis radiator of power supply box. The transistors are not critical.

I used 2n3771 devices 50v 20a 200w simply because i had a whole bunch of them in my junk. A good idea here is to start to use colour coded wire to identify the voltage rails perhaps orange for the un regulated supply red for the 13 8 volt regulated output and black for negative rail. A 7812 positive 3 terminal regulator is used for the main regulation and this is followed by as many power emitter followers as needed for the current you require. Build a 10 amp 13 8 volt power supply.

The power supply circuit is shown in figures 1 and 2. How to build 10 amp 13 8 volt power supply. When the zener diode conducts the gate of the scr is turned on. Part list for 20 amp bdx33 based power supply.

The circuit in figure 2 senses when the voltage exceeds 15 volts and causes the zener diode to conduct.