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 Post subject: Re: Need pass transistor test jig
PostPosted: Dec Fri 15, 2017 7:15 pm 
Member

Joined: Sep Thu 23, 2010 6:37 am
Posts: 9667
Location: Powell River BC Canada
They are external. Otherwise you use THE D cells placed inside the tester.

A complete manual is here :

https://elektrotanya.com/heathkit_im-30 ... nload.html


I just might order a newly printed manual, from Manualman. That is so much nicer
than looking at a computer screen

Attachment:
IM 30 EXTERNAL POWER INPUTS.JPG
IM 30 EXTERNAL POWER INPUTS.JPG [ 19.28 KiB | Viewed 296 times ]

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de
VE7ASO VE7ZSO
Amateur Radio Literacy Club. May we help you read better.
Steve Dow
ve7aso@rac.ca


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 Post subject: Re: Need pass transistor test jig
PostPosted: Dec Fri 15, 2017 7:58 pm 
Member

Joined: Sep Sat 06, 2008 3:04 am
Posts: 196
Location: Benton City, WA
radiotechnician wrote:
They are external.
A complete manual is here :
https://elektrotanya.com/heathkit_im-30 ... nload.html

That link only gave me the schematic.

If I acquire or borrow a IM30 and the also have to build, buy, or find an external power supply to test the 2N5886's to 40v at 10 or 15 amps them it would be cheaper for me to just build a power supply and throw the transistors in it and leave it on under load for some period of time as the results would be the same.
Thank you.


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 Post subject: Re: Need pass transistor test jig
PostPosted: Dec Sat 16, 2017 1:47 am 
Member

Joined: Sep Thu 23, 2010 6:37 am
Posts: 9667
Location: Powell River BC Canada
Electrotanya is a weird site to get anything from at best of times. However..
I got this yesterday.
Attachment:
Heath Daystrom IM 30.JPG
Heath Daystrom IM 30.JPG [ 62.35 KiB | Viewed 287 times ]




The IM30 is a static transistor test bridge that uses techniques in use 50 years
ago.

When I use mine, I connect it to a three output Heath power supply.

_________________
de
VE7ASO VE7ZSO
Amateur Radio Literacy Club. May we help you read better.
Steve Dow
ve7aso@rac.ca


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 Post subject: Re: Need pass transistor test jig
PostPosted: Jan Tue 30, 2018 5:23 pm 
Member

Joined: Sep Sat 06, 2008 3:04 am
Posts: 196
Location: Benton City, WA
radiotechnician wrote:
When I use mine, I connect it to a three output Heath power supply.

Which 3 output Heath supply? At what voltage and current are they running? I can understand that 2 of those voltages and currents are reasonable and obtainable but one supply would have to be pretty high current (10 amps or more) and higher voltage (40v in my case) to be able to simulate the conditions in my TS940.


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