วงจรตั้งเวลา 1-20ชม.(Cycle timer 1-20 hours.)

R1 = 2K2 IC1 = 555, timer R2 = 39K IC2 = 14017, decade counter R3 = 470K (pot) IC3 = 14020, divider R4 = 1M Q1 = 2N3906 R5 = 27K D1 = 1N4001 R6 = 6K8 D2 = 1N4001 C1 = 0.12µF, ceramic S1 = Push switch, momemtary on C2 = 1.2µF, polyester S2 = 3-step/2-deck rotary switch C3 = 0.1µF, ceramic Ry1 = 12V

วงจรมิกเซอร์(2input)ใช้เฟท(Mixer circuit 2input using Fate.)

R1, R3 10K Pot
R2, R4 100K 1/4 W Resistor
R5 6.8K 1/4 W Resistor
C1, C2, C3 0.1uF Capacitor
Q1 2N3819 Junction FET

วงจรอินเวอร์เตอร์120 -220VAC(Inverter 120-220VAC)

This inverter will sufficiently power any of your 115VAC (or 220VAC)small appliances. T1 choice of amperage is yours to make, but if you can salvage a heavy-duty unit from somewhere, use it. The least expensive method to get a larger transformer would be to remove the old 2000v primary and then re-wind an old microwave transformer. Most of these transformers are rated 1KW or better.