Subject:
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Re: Solar-powered RCX?
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 10 Nov 1998 19:14:28 GMT
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Viewed:
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2709 times
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I use a big transformer only type wall wart I had laying around. Pure AC
output. The wall wart says it is 9VAC @ 3.2A but no load is about 10.5VAC. I'm
sure this is more power than I need but it was free. If I look at the normally
(battery) 8.2vDC voltage that appears for a Light type sensor when I plug the
wall wart in it jumps to 8.6v. Now 10.5VAC would make something close to the peak
AC voltage = 14.8VDC-the diode drops or about 13V. Something is regulating for
the 5V and to a lesser extent the 8V from this. I'll look at the motor voltage
tonight.
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Message is in Reply To:
 | | Re: Solar-powered RCX?
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| Kekoa Proudfoot wrote in message <199811101742.JAA037...rd.EDU>... (...) This implies a 9-12V AC adapter. This is a cost reduction, since a DC adapter is generally a transformer, bridge and minimal filtering. The Brick needs reverse voltage (...) (26 years ago, 10-Nov-98, to lugnet.robotics)
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