Well it is not tubes but!!!
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| Posted on August 18, 2016 at 07:00:49 | ||
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Posts: 764
Location: Tucson Az Joined: August 7, 2003 |
OK it is not tube question but I trust the guys on this forum. I am building a 2/3 phase motor controller and DHT's did not seem to be in cards. So I have some parts on the way but I need to figure out how big a power supply I need. These little sand amp are digital I think. (DC 12v-24v tpa-3116)on Ebay. They are small and a 100 watts into 2 ohms. I am going to run up to a 30 watt motor for the turntable so I am wondering what kind of current these transistors need to produce 30-100 watt output. So the plan is power supply to step down to 12-24 DC volts. Feed the frequency gen/splitter (50 ma) then the 3 amps. Take 12-24v output from amps and step up with toroidal transformers to 120v to the motor. I am guessing that different transistors and designs need different current but is there a ball park. For example I have a Toshiba 100-240v 1.5 amp input 15 volt 5 amp output power supply from a old laptop. Would the 5 amps be in the ball park??? Thanks Tom P.S. On a tube note I picked up a Radiotron designer's handbook third edition hard back mint condition for 5.00 at a local book store.
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