Popis dijelova:

Otpornici su 1/4 Watt, 5%

R1, R3 = 1K5
R2 = 6K8
R4 = 3K3
Rx = 1K-10K (vidi tekst. Sam 3K3)
P1 = 20K, trimer pot
LDR1 = Optokopler
Q1, Q2 = PN200, 2N3906, NTE159, 2N4403, itd.
Q3 = 2N3053, 2N2219, 2N699, NTE128, itd.
D1 = 1N4001
Ry1 = Relay, 9-12V

Izvor: tonys website