February Circuit Cellar Challenge
I may have messed that up, but can you offer a formula rather than just telling me that I'm wrong? I am using the simplification that the capacitor charges to
Re: Simple LED driver StUPID QUEStION
First of all, the 220V is probably AC. We really don't want the negative half cycle. So, at the very least you will need a series diode. Now we have 110V DC
Car alternator toasted—twice!
"Ideally, you use as little of it as possible." It also drys out. If you have a high value asset, that's in a heavy use, it pays to go in, and re-pack the
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This is what we use at work in our electrical panels: http://www.amazon.com/Brady-BMP21-PLUS-Handheld-Printer-Multi-Line/dp/B00IELD1O4# On Tuesday, February
Simple LED driver
On 2/24/2015 9:38 PM, Paul Alciatore firstname.lastname@example.org ... Hello Paul, In succeeding messages the original poster said. "I don't have any data on LEDs-they
bistable multivibrator / discrete frequency divider
Yes, Andy, you are right, I was thinking of the 1N4001 series. :-) I find it interesting that the 1N4001 has a capacitance of 15pF compared with the 1N4148
New file uploaded to Electronics_101
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Electronics_101 group. File : /1 -
Electronics Design Cost Saving Tips?
Mark, I really like the AT Tiny85 and have the environment and knowledge to program it. Sadly, I have found it to be a wonderful solution looking for a
Old Mullard Germanium Transistor Datasheets
Geoff Thank you very much. It is always very difficult to locate info on some of the older pieces in our collections of parts. I too will will attempt to
BJT Easy Relaxation Oscillator / LTspice, open node
... Their price is a bit absurd, considering. OTOH, I googled the title and the first hit gave me a 400-some-odd page pdf to download, of the 1993 edition.
Roy J. Tellason, Sr.
Proximity sensor to replace microswitch?
The only thing the original post says about the machine is that it processes soil and there is dirt or dust everywhere. That may help, but it is hardly a
Instructables link is not mine and they are not reliable for technical information; the cliftonlabs link is worth a look, which is why I posted it. Donald.
Donald H Locker
Help identifying part
I think I found the part I need. Roy definitely put me on the right track. I had been using the wrong key words in my searches. When I used "optical
Circuit Cellar 7805 circuit challenge.
Drat! Yahoogroups seems to be randomly deleting the quoted text. Anyway... this looks like a decent online tutorial about linear power supply design. Linear DC
Voltage Regulator Chip/Design for VARIABLE Supply
The LM43603 does look like a better chip, but it is also more expensive, not available in a through-hole version, has a smaller heat transfer area, and seems
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