Just a bit of confusion that's all. Too many amps are called F5 hehehe, I'm getting advice from several camps.
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I have some to-220 heatsinks that will fit on the front side that I was considering using.
Sure, the idea being to spread the force more evenly across the transistor and not put too much stress on one point...mission accomplished.
I was looking back at Jim's build guide and came across the photo posted below:
Your standoffs are quite a bit taller than his and I'm hoping the leads on the thermistors you ordered are long enough to bend up over those transistor legs and down to the transistor body. Also, Isn't it standard practice now to have the thermistor touch the plastic casing rather than the washer? Obviously it worked for Jim but I was told not to do it that way. I guess the reasoning would be if the coating on the thermistor were chipped it would make electrical contact with the washer.
I was looking back at Jim's build guide and came across the photo posted below:
Your standoffs are quite a bit taller than his and I'm hoping the leads on the thermistors you ordered are long enough to bend up over those transistor legs and down to the transistor body. Also, Isn't it standard practice now to have the thermistor touch the plastic casing rather than the washer? Obviously it worked for Jim but I was told not to do it that way. I guess the reasoning would be if the coating on the thermistor were chipped it would make electrical contact with the washer.
If I have to, I will solder it from underneath and heatshrink the legs and run them through the fet legs.
From the original article:
Th1 and Th2 are small 4.7 Kohm thermistors that have been placed in series with R15 and R16 respectively. The resistance of the thermistor declines with temperature, and if placed in close proximity to the output transistors will help compensate for thermal drift. You can build the amplifier without them, but you will have a longer warm-up time and you will spend more time adjusting the bias.
Th1 and Th2 are small 4.7 Kohm thermistors that have been placed in series with R15 and R16 respectively. The resistance of the thermistor declines with temperature, and if placed in close proximity to the output transistors will help compensate for thermal drift. You can build the amplifier without them, but you will have a longer warm-up time and you will spend more time adjusting the bias.
I imagine not, it just has to change based on temperature and remain consistent if we're trimming the bias with pots anyway.