Enzy
Advanced Member level 1
What I did was I built a 12vdc power supply and used it to power the arduino and I have a truck battery, the connections other wise are the same but the fets get hot in seconds and I release that the bigger the transformer the more current they pull.
Even if I don't connect the gate of the fets and just apply dc power to center tap and source the fets get hot.
My last attempt was today I bought a 1/2amp transformer and without gate connections it was pulling 1.4 amps for the battery. When I apply oscillation to the gate I get the correct voltage and frequency and duty cycle. If I decide to step up the transformer size to 3 amps they start pulling like 5 amps right away and I tried a 10 amp transformer and they started pulling like 15amps.
I have hundreds of Fets mostly irfz44n and all had the same issue, I tried irf510 and same issue, I tried irf3205 and same issue.
I tried tip122, tup41c and bc547 but those didn't turn on.
Any ideas on what could be causing this issue.
Even if I don't connect the gate of the fets and just apply dc power to center tap and source the fets get hot.
My last attempt was today I bought a 1/2amp transformer and without gate connections it was pulling 1.4 amps for the battery. When I apply oscillation to the gate I get the correct voltage and frequency and duty cycle. If I decide to step up the transformer size to 3 amps they start pulling like 5 amps right away and I tried a 10 amp transformer and they started pulling like 15amps.
I have hundreds of Fets mostly irfz44n and all had the same issue, I tried irf510 and same issue, I tried irf3205 and same issue.
I tried tip122, tup41c and bc547 but those didn't turn on.
Any ideas on what could be causing this issue.
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