hevans1944
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hevans1944 replied to the thread Math Severity as applied to Serious Electronics.@John R Retired: As a hobbyist, I used to find and repair "vintage" electronics beginning in the 1950s... as in radios and televisions... -
hevans1944 replied to the thread Math Severity as applied to Serious Electronics.@John R Retired: I just "celebrated" my 81st birthday on June 25, 2025. I was forced to retire in December 2014 when the company that...
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hevans1944 reacted to Minder's post in the thread Not Understanding Arduino useage versus traditional Electronics useage in Devices. with
Like.
Yes. -
hevans1944 reacted to crutschow's post in the thread Why do some devices turn on with the mains before the "On" button is pressed? with Like.
My thought is that it's just a bad/lazy design. They didn't bother to insure that the device would not power up when first plugged in.
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hevans1944 reacted to bertus's post in the thread Math Severity as applied to Serious Electronics with Like.
Hello, This booklet is a nice reference, with a lot of formulas used in electronics...
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hevans1944 reacted to bertus's post in the thread Math Severity as applied to Serious Electronics with Like.
Hello, Yes, there are more books available over there...
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hevans1944 replied to the thread Math Severity as applied to Serious Electronics.I started out working electronics as a hobby. First thing I learned was Ohm's Law. This did require simple algebra and basic arithmetic...
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I would tend to look to a 5:1 planetary gear box, with it also comes an increae in torque! There are several reasonably priced out there. !
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hevans1944 replied to the thread Motor is too fast.Thanks for providing a list of manufacturers for Universal motors. But do you have a solution to the original problem of the existing...
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Many pieces of domestic equipment still using Universal motors. BTW, Groschopp, ElectroCraft, Dumore Motors, and Universal Electric...
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hevans1944 replied to the thread Motor is too fast.Wow, @Minder! You really are old if you remember universal-wound AC/DC motors. And, yeah, I remember the "runaway" problem with series...
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hevans1944 replied to the thread convert speaker output to microphone input.Could you clarify what you want to do? At first, I thought you wanted to use a speaker as a microphone (as most intercom systems do)...
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hevans1944 replied to the thread Motor is too fast.Sometimes we just have to accept reality and bite the bullet. As @Minder stated, it is LIKELY that your string-mower has a BLDC...
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hevans1944 reacted to poormystic's post in the thread Speaker output ohmage without information. with Wow.
Wow Just suck and see :) 1) Connect a signal and a speaker. 2) Start the volume at zero. Turn volume up gradually. If speaker and amp...
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hevans1944 reacted to davenn's post in the thread Speaker output ohmage without information. with Like.
Agreed ... time to close the thread from rambling on even further
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