Is the +15 vdc in the original circuit suppose to be, 15 vdc before the Load is in the LC coil or is it 15 vdc after the Load is in the LC coil?
My transformer was 10.8 vac. After the bridge rectifier and capacitor bank voltage is 19.1 vdc with the induction circuit OFF. With the induction circuit ON but NO load in the induction coil voltage was 15.3 vdc. With a 1/4" steel rod in the induction coil voltage was 11 vdc on the circuit.
I added 3 more turns to my transformer voltage is now 13.6 vac. After the bridge rectifier and capacitor bank voltage is 21.1 vdc with the induction circuit OFF.
With the induction circuit ON but no load in the induction coil voltage is 17.8 vdc before the choke, 17.62 vdc after the choke. With a 1/4" steel rod in the induction coil voltage drops to 13.5 vdc. As the metal part heats up voltage drops to 13.18 vdc, then as the parts turns red hot voltage increases to 14.3 vdc.
With 1 choke removed but the original choke still in the circuit, induction circuit ON but no load in the induction coil voltage is 17.8 vdc. With a 1/4" steel rod in the induction coil voltage drops to 14.2vdc. As the metal part heats up voltage drops to 13.3 vdc, then as the parts turns red hot voltage increases to 14.5 vdc.
A 1/4" steel rod is Red Hot in 17 seconds now.
A 3/8" rod is Red Hot in 19 seconds.
Current is now over 20 amps with the small 1/4" steel rod load.
Should I add more turns to the transformer secondary coil to get 15vdc on the mosfets with a large load?
Mosfet STP55NF06L = 60v 55a .015 ohms.
**broken link removed**
My transformer was 10.8 vac. After the bridge rectifier and capacitor bank voltage is 19.1 vdc with the induction circuit OFF. With the induction circuit ON but NO load in the induction coil voltage was 15.3 vdc. With a 1/4" steel rod in the induction coil voltage was 11 vdc on the circuit.
I added 3 more turns to my transformer voltage is now 13.6 vac. After the bridge rectifier and capacitor bank voltage is 21.1 vdc with the induction circuit OFF.
With the induction circuit ON but no load in the induction coil voltage is 17.8 vdc before the choke, 17.62 vdc after the choke. With a 1/4" steel rod in the induction coil voltage drops to 13.5 vdc. As the metal part heats up voltage drops to 13.18 vdc, then as the parts turns red hot voltage increases to 14.3 vdc.
With 1 choke removed but the original choke still in the circuit, induction circuit ON but no load in the induction coil voltage is 17.8 vdc. With a 1/4" steel rod in the induction coil voltage drops to 14.2vdc. As the metal part heats up voltage drops to 13.3 vdc, then as the parts turns red hot voltage increases to 14.5 vdc.
A 1/4" steel rod is Red Hot in 17 seconds now.
A 3/8" rod is Red Hot in 19 seconds.
Current is now over 20 amps with the small 1/4" steel rod load.
Should I add more turns to the transformer secondary coil to get 15vdc on the mosfets with a large load?
Mosfet STP55NF06L = 60v 55a .015 ohms.
**broken link removed**
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