### DESCRIPTION 

Bench power supply  

0v-30 v

0,002 A— 3 А

### TECHNICAL DETAILS / COMPONENTS

24v input

3A max input

Parts

R1 = 2,2 кОм 1W
R2 = 82 Ом 1/4W
R3 = 220 Ом 1/4W
R4 = 4,7 кОм 1/4W
R5, R6, R13, R20, R21 = 10 кОм 1/4W
R7 = 0,47 Ом 5W
R8, R11 = 27 кОм 1/4W
R9, R19 = 2,2 кОм 1/4W
R10 = 270 кОм 1/4W
R12, R18 = 56кОм 1/4W
R14 = 1,5 кОм 1/4W
R15, R16 = 1 кОм 1/4W
R17 = 33 Ом 1/4W
R22 = 3,9 кОм 1/4W
RV1 = 100K trimmer
P1, P2 = 10KOhm linear potentiometer

C1 = 3300 uF/50V  electrolyte

C2, C3 = 47uF/50V  electrolyte

C4 = 100нФ polyester

C5 = 200нФ polyester

C6 = 100пФ ceramic

C7 = 10uF/50V electrolyte

C8 = 330пФ ceramic

C9 = 100пФ ceramic

D1, D2, D3, D4 = 1N5402,3,4 диод 2A — RAX GI837U
D5, D6 = 1N4148
D7, D8 = 5,6V zener

D9, D10 = 1N4148
D11 = 1N4001 diod 1A
Q1 = BC548, NPN transistor or BC547
Q2 = 2N2219 NPN transistor — (change to КТ961А — all works)
Q3 = BC557, PNP transistor or BC327
Q4 = 2N3055 NPN power transistor (change to КТ 827А)
U1, U2, U3 = TL081, operational amplifier

D12 = LED diod

### LEARN / TOPIC / BUILD INSTRUCTIONS

https://www.youtube.com/channel/UC8EtEKp6dHiYQ8N-G1uNKUw