Hi Damian, I'm very happy about this good news. Dennis

Neil Simon, the current global communications director at Tek, seeks Tektronix alumni to share stories to celebrate the company's 75th Anniversary. He is looking for 3-4 people from various decades to

Hi Morris, So far I think there have been at least 7 or 8 things the humble B-E junction can be used for. I'm certain none of them were ever mentioned in any of my EE courses, and I would guess no-one

You are correct about 4 to 5V being the magic zero TC. That wasn't my point. In 1970 the reverse B-E junction cost less than 1/20th of a Zener diode. No need to use reverse junctions today. Zener's ar

My boss taught me a trick back in the early 1970s when Zener diodes were expensive and some transistors were almost as cheap as "pop-corn". The reverse biased base-emitter junction has a very sharp br

PLEASE! Enough about Laugh-In. It was stupid then and now, in retrospect, it is extremely stupid. It is not relevant to the majority of TekScopes members. Dennis Tillman W7pF

Very clever! I never thought of that. There was a time I could have done this and I know exactly how it works. Yes, there is a risk, but as you point out it involves no dangerous chemicals or careful

SIMPLE! Look at the bidding history. 46 bids is all you need to know. Two morons with virtually no buying history on eBay kept outbidding each other a few euros at a time. After a certain point reason

Hi Steve, I suspect the noise is coming from the circuit you are measuring with the FET probe. A simple test should be able to determine if the probe or the circuit you connect the probe to is the noi

Thank you one and all for your suggestions on removing the potting. Your suggestions fell into two general categories: 1) Nasty chemicals which I decided had to be avoided at all costs based on your a

Hi Tom et al, I can confirm Tek was already using Tunnel Diodes in 1963 when they developed what would become the 067-0513-00 Tunnel Diode Pulse Generator. I have the 23rd one of these that Tek made.

Hi Jeff, I got this reply from John Addis. He is the absolutely brilliant designer of many Tektronix ICs, circuits, amplifiers, and the DA1855! Dennis Tillman W7pF Sent: Thursday, February 18, 2021 7:

Hi Ryan, Please tell Valerie hello for me. If you remind her I'm the one with all the Golden Retrievers she will remember me. She was so nice to me when I was there. We had a good talk about what coul

Hi Damian, The US Post Office can only provide tracking information for packages that go through their system. Once they leave the protection of the US Post Office it is up to foreign countries to pro

Hi Rik, Tunnel (Esaki) diodes rely on quantum tunneling. That is probably beyond the expertise of most electronics engineers to model in the way I think you mean. On the other hand it is not that hard

Hi Ed, I never thought about suction until you just mentioned it just now. Thank you for that intriguing new strategy for cleaning these sealed pots. One idea I had (with no success) was to immerse th

Hi Brad, RCA made them. They came in a 1" wide stud mounted case. The stud's threads were 3/8" - 24. The RCA 40079 had an Ip of 180 to 220 AMPS! The RCA 40070 was rated at 90 to 110 AMPS Ip. Dennis Ti

Hi Jeff, Transistors do not have a "specific" hFE. Look at the datasheets for the 2N3565 and the 2N2907 transistors. For that matter, you can look at the datasheet for ANY transistors. The datasheets

Hi Greg, Kim was in no hurry to marry Scott. I can hardly blame her:) By the time she finally agreed they had found a house to die for in a perfect location west of Beaverton where Kim grew up. This h

Hi Miguel, This is precisely the curve a Tunnel Diodes creates on a curve tracer. From this image you can measure many of the important tunnel diode (TD) parameters. The curve tracer typically applies