Lately, I've been trying to build a ZVS circuit that follows the schematic shown below
However, when I actually attach a DC power supply that can supply up to 5A @ 30VDC, and crank is past a certain limit, power supply indicator switches from constant voltage to constant current and the voltage drops.
At first, after only around 8V, the power supply changes to constant current and the input voltage drops to 3V and the current draw becomes 153mA
After removing the transformer, the limit changes to around 15V
After removing the capacitor, the power supply no longer switches to constant current at all.
The thing is, I've done this exact circuit before and it worked perfectly. My question is, what is causing such a problem?
Attached below is the list of components, and the LTSpice file
NPN MOSFETs: IRFP260N
Schottky diodes: UF4007
Capacitor: WIMA MKP 0.1uF rated at 250VDC
Resistors: 100Ω 5W cement resistors and 10kΩ through-hole resistors
However, when I actually attach a DC power supply that can supply up to 5A @ 30VDC, and crank is past a certain limit, power supply indicator switches from constant voltage to constant current and the voltage drops.
At first, after only around 8V, the power supply changes to constant current and the input voltage drops to 3V and the current draw becomes 153mA
After removing the transformer, the limit changes to around 15V
After removing the capacitor, the power supply no longer switches to constant current at all.
The thing is, I've done this exact circuit before and it worked perfectly. My question is, what is causing such a problem?
Attached below is the list of components, and the LTSpice file
NPN MOSFETs: IRFP260N
Schottky diodes: UF4007
Capacitor: WIMA MKP 0.1uF rated at 250VDC
Resistors: 100Ω 5W cement resistors and 10kΩ through-hole resistors
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