MisterBill2
- Joined Jan 23, 2018
- 27,777
One adjustable regulator with a switch to bypass one or two or NONE. By having the switch bypass instead of select, there will be no interval with no programming resistance, and thus no unfortunate transients. And only one regulator providing the three preset voltages. So only one driver required. And no loss of the functions requested.Yes, true but I would have to manually adjust the output voltage each time I wanted to move to a much higher value before connecting the correct circuit (to match the component values), wouldn't I?
As for frequencies, the square wave has a very long string of odd harmonics, and, unfortunately, square waves and transformers do not play nicely, especially as the frequency increases.
The really bad news is that the emitter follower amplifier shown in the earlier post will not come close to delivering a square wave because the RC portion will convert it into a curved RC time constant shape of sawtooth wave.
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