Pulse Width Modulation with current limiting


PWM

Parts List:
R1,R6,R11 = 10KC1 = 1000uF, 64VR2,R9 = 1K8C2 = 10nF, polyester R3 = 100 ohmC3 = 100uF, 64VR4,R8 = 1K C4 = 22nF R5 = 22KC5 = 47uF, 35V R7 = 1M *R10 = 0.003 ohm D1,D2 = 1N4004R12 = 3K9U1 = LM7810, volt regulatorR13 = 100K U2 = LM324, Op-ampR14 = 10 ohm/1 WattQ1 = IRFP064, IRFZ44, etc.MOSFet P1 = 20K (Frequency) P2 = 10K (Duty C.) P3 = 1K (Current L.) *see textNotes:Resistor R10 is there more for safety purposes than anything else and can be omitted if you wish.It protects Q1 in case of a short circuit.


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