Hi everyone,
I have a few preliminary photos of the Rosemary Ainslie COP>17 Heater Circuit wave forms I'd like to share
555 ON - Minimum Resistance + - (2K pot)
555 OFF - Maximum Resistance + - (10K pot)
Gate - Minimum Resistance + - (5K pot)
Freq - 7.8 to 8.1 Mhz
Load Resister Temperature - 137 degrees F
Mosfet Temperature - 169 degrees F
Load Resister 10 ohm 100 watt "Memcor" ( 20 to 24 uH ? )
(2) Exide Technologies Battery's "Liquid" Lead Acid / Model # GT-H - TRACTOR 12V - 12Ah - CCA 235
(1) CSB battery "gel" Lead Acid / #GP 1270 F2 - 12V - 7Ah
__________________________________________________ _______________
555 Timer Pin #3 - Channel 2 - 1V (x10) ["No" 24 VDC Battery Bank Connected]

Mosfet shunt - Channel 1 (A1) - 50mV (x10)
555 Timer Pin #3 - Channel 2 - 1V (x10)




The circuit seemed to like these settings ..... but we'll see .....

Glen

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