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i wanted to know if replacing the 1k pot with a 5k will give a higher max voltage on the psu output?.

Ah yes, a simple way to make a single device act as a pushbutton and indicator - even at the "same time", well within the expectation of timing by the average human ;-)

A momentary normally open push button to close and latch the relay A momentary normally closed push button wired is series with the coil winding to release. Bertho

Roy, I can see how easy it would be to make a relay latch, but how would you get it to release? You set it with a positive pulse and reset by dropping the earth. That will also make it as reset at

I had to go and dig for JK schematic. I have always (way back when) used NAnd gates to create. Did not know there were JK ff ic packages. Maybe I did, and just used NAnd as the lab from TI missile

[But not my last post on LEDs] Mimms submitted a proposal to ?ATT? (?Bell Labs?) for use of a LED at each end of a fibre optics link, they politely rejected his idea and a few months later gave a

Oh, that ESP32 is a fun one. LOTS of capabilities there. Check out the youtube videos by Ralph S. Bacon (who unfortunately hasn't uploaded anything recently, I hope he's okay). He does a number

In a situation like this, it's really best to tie the unused leg to the center one. The reason for this is if there's any intermittent contact, the effective resistance goes from wherever it's set

Oh yeah, and optoisolators and optointerrupters. I have a whole tube of NOS 4N26, I think, plus piles of salvaged other numbers I did find a use for an optointerrupter. I was given a sewing

No, that's bistable. -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed.

well i orderd one along with some esp32 blue pill boards to make a coil winder with,will see when they get here,aliexpress say delivery should be on dec 5th.

i have had a few glass diodes light up briefly in the past when overloading them,does that count?.

Hi all, I have just brought this psu, https://www.ebay.co.uk/itm/186801000648 its o-30v 0-1a,its made of discrete components with no ic's, its transfo has a center tap then +50v,+40v/-50v+-40v taps

paul larner <quadzillatech@...> added the photo album my psu ( /g/electronics101/album?id=299190 ) : my psu pics

A point that I didn't address in my earlier reply. You've gotta do *something* with those set and reset pins. A power on reset signal would probably be a good thing to add to your design. That can

I can see how easy it would be to make a relay latch, but how would you get it to release? -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this

That's why he specified "debounced"... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but

That'll work, also a Type D FF, if you tie the D input to the Not-Q output. Whether high input will trigger it or not depends on the part, they can work either way, check the datasheet (have a

On Friday 29 November 2024 07:35:28 pm wn4isx via groups.io wrote: > We've had several requests over the last few years for LED flashers for model train enthusiasts. One problem with most LED flashers

On Friday 29 November 2024 07:24:12 pm wn4isx via groups.io wrote: > This will be my last post on non-LED semiconductors emitting light. > > First, all of the forward biased semiconductors I tested