Could someone help a newbie with a good circuit and toroid size and specs needed to build a linear 24VDC and 10amp regulated power supply to replace a basic Meanwell? I've built many kits but design is beyond my purview. The size (esp. amperage) puts this outside of commercial DIY or pre-built offerings, it seems. Or if you have a commercial pre-built or DIY solution, I'm good with that as well
Here is a 24v 12A supply in stock in SC. https://www.newark.com/solahd/sls-24-120t/power-supply-linear-24v-288w/dp/93K6608
$308+freight.
Switchers you have to build in a steel box with rf filters on output to use in amplifiers.
If you are going old fashioned linear to avoid RF noise, a 300 VA 28 v toroid should be a start. You can't use 24 v toroid because rectifiers drop 1.5 v. Bridge rectifier obviously has to be >10 A rated. Capacitors before & after regulator transistors, 22000 to 33000 uf, >35 v rated. Then 7 parallel TIP107 out with .22 ohm emitter resistors. 11 v >5 W zener should drive bases through 1 k resistors each. You can parallel the zener with pot to measurement to adjust output down from 12.5 to 12. wiper goes to the 1k base resistors.
Need a pretty big heat sink, 150 cm x 35 cm x 4 cm minimum I would guess.
Replace pot with two resistors after adjustment made for long term reliability. Pot wipers lose connection due to oxide over the years.
$308+freight.
Switchers you have to build in a steel box with rf filters on output to use in amplifiers.
If you are going old fashioned linear to avoid RF noise, a 300 VA 28 v toroid should be a start. You can't use 24 v toroid because rectifiers drop 1.5 v. Bridge rectifier obviously has to be >10 A rated. Capacitors before & after regulator transistors, 22000 to 33000 uf, >35 v rated. Then 7 parallel TIP107 out with .22 ohm emitter resistors. 11 v >5 W zener should drive bases through 1 k resistors each. You can parallel the zener with pot to measurement to adjust output down from 12.5 to 12. wiper goes to the 1k base resistors.
Need a pretty big heat sink, 150 cm x 35 cm x 4 cm minimum I would guess.
Replace pot with two resistors after adjustment made for long term reliability. Pot wipers lose connection due to oxide over the years.
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Is it for audio with a variable load-current? For audio with a rather constant load current (class A)? For other use with a constant load current?
Why do you prefer a transformer+linear regulator over an SMPS?
Why do you prefer a transformer+linear regulator over an SMPS?
