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These were new old stock and I didn't have to desolder a bunch of transformers. I'm as cheap as the next guy, but, at 73 I have to balance the value of my time on this side of the grass against the

Such transformers, with, and without CT, can be recovered from old computer modems add-in cards. Nuno T. Sent: 22 February 2025 22:52 To: [email protected] Subject: [electronics101]

Not enough information. Depending on the differential input circuit, and on its CMRR, it may accept single-ended inputs directly.? Apply signal and ground to the differential input pins. There are

I gave quite a few suitable transformers of mixed heritage. But, I was building a project for a friend and decided using the same transformers would make life easier for someone else down the line,

I got that when you brought it up before. Not bad for communications gear, but for more general audio uses that lower end of the frequency response is pretty pitiful.

Hello , I have a single ended PID and a vccs driver (differential ) What is the best way to connect the two, so the PID output will be driver

First, I have no financial stake in Electronic Goldmine, I'm just a satisfied customer. I needed some transformers for a special project and Electronic Goldmine started offering

I don't know specific numbers offhand, but I have a whole pile of those "canned" oscillators in various frequencies. The kind where you plug 'em into an IC socket. I assume that two opposite

I don't recall what value my friend suggested, and it was a *long* time ago... I used to see it all the time with my Tek 2246 when troubleshooting stuff like the c64. Probably because I was using

Okay, that makes sense... I wouldn't have thought to do that, either. I'll have to check the ones I salvaged, and see what they measure. -- Member of the toughest, meanest, deadliest, most

Epson offers sine, triangle and square wave, though not all waveforms are available on all models. They have reasonably low phase noise, I wouldn't want to use one for a VHF digital data mode, but for

The crystal in these has a very special cut (SC? IIRC) that has a temperature curve that is very flat in the operation area as compared to the commonly available AT cut. The parabolic curve slope

A friend tried this and the answer is .... Nope. Opening the sealed metal case is a challenge, Joey destroyed 4 before he succeeded with number 5. Everything inside is supper small surface mount,

does anyone know if these ( c CTI OCXO type OSC5A2B02_c an work at different frequencys if the internal crystal is swapped for a different freq item?.

has anyone done a carrier point alignment on the 707/,its vr 3001 and tc 3004 adjustments on the af board,i am having distorted tx audio reports,is there an easy way to adjust?.

Those Bell systems transformers were a good size. I was designing early SMT components to be able to shrink pager size. Try winding #44 magnet wire on a 1mm, 40 mil, diameter ferrite rod and solder

I love bifilar and trifilar windings but modem and very few audio transformers use that format. I've wound special bifilar winding for a receiver for whistlers, RF 1~3kHz. Didn't work any better then

Telephone company line I-O transformers: Your comments below reminded me of setting up production and custom automated test equipment for high volume production of the transformers. The were ferrite

Forgot to mention ringing, if you are dealing with square wave, or very short bursts of AF, say 10~20 cycles of 1kHz, ringing can be a problem. I don't know why it is an issue in some transformers but

The winding are separate, one inside the other so it has shorter turns and a lower resistance, the other is outside and has longer turns so it has a higher resistance. This isn't theory, my Bell