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Posts by Jasen‭

6 posts
77%
+5 −0
Q&A Identification of semiconducting electrical components

JEDEC seems to number them according to one less than the number of terminals, thus TRIACs, and thyristors, and darlington transiostors get 2N numbers even though they contain 3 or more junctions. ...

posted 2y ago by Jasen‭  ·  edited 2y ago by Jasen‭

Answer
71%
+3 −0
Q&A What Sine-Wave Oscillator can be controlled with a microcontroller?

10Hz to 10Mhz is a wide frequency range, it would be very hard to cover that whole range in the analogue domain, as you have discovered analogue oscillators that can span more than a factor of abou...

posted 1y ago by Jasen‭

Answer
66%
+2 −0
Q&A how to figure out the max power of a transformer?

You best source of information is boilerplate on the part itself. you have that but all there is is a part number and the design voltage. Your next best information is the boilerplate on the appl...

posted 1y ago by Jasen‭

Answer
60%
+1 −0
Q&A Need help to replace 555

It's pretty much just a direct substitute for the other 555 chip. Obviously you need to take care not to overload the other parts when you increase the supply voltage. The new part's 5Mhz max mea...

posted 1y ago by Jasen‭

Answer
50%
+0 −0
Q&A Mysterious little cases hanging on street wirings in India

CATV distribution is typically half-inch rigid coax, so it's not that. It looks more like a fibre junction box "aerial fibre terminal" in the parlance.

posted 2y ago by Jasen‭

Answer
50%
+0 −0
Q&A How do PLCs normally measure 4-20mA current loops?

you want a current source start with a linear regulkator like LM340 and use the relays to switch in different load resistors.

posted 2y ago by Jasen‭

Answer