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The most recent discussions

RIP HSC


November 30, 2018, 7:11 am

Got a sad email today: It is with sincere regret that we are announcing the final days for HSC in Silicon Valley. After 54 years we will be closing our doors for the final time on Saturday, January... Read more »

IC test clip with LEDs


October 17, 2018, 8:16 pm

I remember years ago seeing a clip that would fit over an IC and show the logic state of each pin on an LED (or an LED pair). Something like this https://uk.farnell.com/3m/923690-08/test-clip-dil-... Read more »

Power a test TTL circuit from USB?


October 16, 2018, 1:04 pm

Having not touched any of this kind of stuff for years I'm looking to power a small TTL test circuit which I intend to built on a breadboard. I wondered if I could run it off USB power. In other ... Read more »

Modern physics By Randy Harris


October 5, 2018, 2:17 pm

solutions book team s o l u t i o n s m a n u a l t e a m @ h o t m a i l . c o m solutionsmanualteam(at)hotmail(dot)com solutionsmanualteam@hotmail.com We're a team for providing solution manu... Read more »

SIP Capacitors...470x9 on 10 pin SIP


September 22, 2018, 11:13 pm

Not like this group is very active but I am unable to track down any 9X 470/50V SIPs, all appear to be discontinued. Last batch I got from Arrow a year ago, but now one has to order around 10,000... Read more »

Looking for old (eighties) speech synthesizers


June 1, 2018, 7:46 am

I'm looking for speech chips for my collection: UAA1003-1 (German) UAA1003-2 (French) SSI263 SC02 (Votrax) uDP7755 (7756, 7757) MM54104 (Digitalker) MM52164SSR1, MM52164SSR2, MM52164SSR5 und M... Read more »

NiMH Battery Question


May 31, 2018, 1:08 am

Hello all, Quick question. What would the expected voltage be for a new VARTA 3.6vdc 70mAH NiMH rechargeable battery?? Or maybe the better question would be: If the voltage is at 1.76vdc would t... Read more »

Connector


May 16, 2018, 3:54 pm

Hello all, Can anyone identify this connector? The contacts are flat, in the form of thin blades. Matching plug: Piotr Read more »

Sky LNB.


May 7, 2018, 7:29 pm

Found it left on top a public area litter bin. Probably not much in it to harvest - so looking for suggestions. Thanks. Read more »

Timing relay providers


April 23, 2018, 8:25 pm

I seek a timing relay with some/all of the following: a) LV operation, 12-24VDC or AC b) Input triggers a one-shot output c) Intervals in hours, 1-14 or so. d) Reset that will terminate the one-s... Read more »

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The best rated discussions

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5

resistor color code help


Howdy all I have a resistor on a front panel tv control that has a 5 band color code of brn-blu-red-gold-grn. This resistor is not burnt but measures 1.62K ohms. from the color code I would suspect... Read more »

rating
5

Timing relay providers


I seek a timing relay with some/all of the following: a) LV operation, 12-24VDC or AC b) Input triggers a one-shot output c) Intervals in hours, 1-14 or so. d) Reset that will terminate the one-s... Read more »

rating
5

How solder to very fine enamelled woven wires in earphone lead?

  [ 2 3 ]

I have some Sony in-ear headphones. The lead to one earpiece has been cut through completely and I want to rejoin the two wires (which I will call 'conductors' to avoid confusion). The two 'conduc... Read more »

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5

capacitor ESL measurement


Hello, Is there anyone know how to measure the ESL of film capacitor? Will there be any reference standard? Thanks, GS Read more »

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5

Bell tone generator IC ?


Can any reader suggest a bell or chime tone generator IC that's presently available retail? In the past I've used parts like the SAB0600 - 8 pin DIP, hooks up directly to an 8 ohm loudspeaker, only r... Read more »

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5

9v battery terminal blanks?

  [ 2 3 ]

I want to keep some NiMH rechargeable 9v batteries in my tool bag (well, my meter bag, actually). I am currently running a double loop of electrical tape around the entire battery to insulate the... Read more »

rating
2.5

Stepper Motors and Hobby Motors


I have collected a huge amount of stepper motors and hobby motors from CD Roms, DVD players, toys, Audio equipment and just about any item that uses a motor. All motors are tested. If you are interes... Read more »