If it is not cheap there are inexpensive alternatives That allow a standalone display that is small, and also serial data out to put graphs on a larger screen. Here is a design that works with an

Good to know!  Thanks.JimSent from my Verizon, Samsung Galaxy smartphone

hi, My main thought of automating the Tek 576 was to gain access to the switch settings via the mechanical relays, -- which then led to the obvious thought of * replacing the sometimes

My Metcal SP440 has its own vacuum pump and reservoir. -- Dale H. Cook, Radio Contract Engineer, Roanoke/Lynchburg, VA https://plymouthcolony.net/starcityeng/index.html

hi Jim, Actually, sub milliOhm RDS ( µRDS(on)FET™ series ) Mosfets *are* a reality now with Picor's PI2002, RDS @ ~ 360µΩ , and the PI5101, @ ~ 0.7 milliOhm but at lower voltages. So

I use an older Metcal SP440 desoldering station in the shop and have several tips. The tips have been out of production for years but I have searches running and have been able to keep spares in stock

No - you missed the part where I said the driving chip is MOS. The 7447 was the perp and it could have been anything. In the 8000A, the MOS A/D chip drives a (TTL) 7447 display decoder. The

I recently bought a RTB2004 fully calibrated. It has a waveform and pattern generator, protocol analyzer, logic analyzer, ... Another words, it has a lot of the tools I wanted to get anyway. Yes, I

Have you checked all the electrolytic caps to confirm none are leaking ? also I guess you meant R110, which is the limiting resistor to the plug-in. If that is burned, either the plug-in is shorted

Those kinds of shorts are hard to find. If you have an AC current clamp you could try measuring the current in the secondary wires when your light-blob is in the primary. That will help narrow down

Thanks for the reply John... I will keep looking. I have been working on this on and off for a long time and cannot seem to trace the problem. Pulling the -150V rectifier tubes is a good idea. Worth

I use a DS1 also. I too like it a lot. I have a tiny little compressor I use for it that I made from an old A/C compressor, it's about as quiet as an air conditioner or fridge running. --Eric

Hi, You are right, the 454 has not DC restores. Sorry for the misleading indications, I don't have a 454 and I had not checked the schematics.

Hi Jon I got lucky and ran across a lot of MX-500P supplies for cheap, so I have them distributed around. The auto shutoff is also a great feature (especially for me ! :-) Yes, they do require an

Thank you very much!! larry

Hi, Actually I think the problem is likely even MORE prevalent when hand soldering. The intermetallic layer growth not only occurs due to aging but also happens when a joint is heated longer and/or

Paul, I was the designer in 1991 of the Metcal SP-200 with a 500 kHz resonant mode power supply, I have several protos and comple units, and collection of the tips, stands. Agree that Metcal is the

I use Metcal equipment and have the DS1 desoldering gun. Some people don't like the venturi vacuum generator, but it never bothered me. The handpiece is small, light and easily positioned. It's

I've had a Hakko 808 for about 8 years or so and it ranks as one of the best investments I've made in electronic tools - ties with my soldering iron, also Hakko. The FR-301 improves on a few things

Besides this problem you have "tin disease" in very cold climates and "tin whiskers" for very close spaced solder connections and at higher voltages. Jon