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Offline Paul ATopic starter
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« on: March 27, 2009, 03:00:39 pm »
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Anyone ever heard of it? Used one?
I've got hold of one that wasn't working (It is now - all that was wrong was the internal Nicad Batteries were the originals - about 20 years old I'd guess)
Haven't had a chance to try it out as yet.

Also - Can anyone suggest a replacement for the TRF730 transistor? (400v 5a I think......)



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« Last Edit: March 28, 2009, 05:43:26 am by Paul A »
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Offline Eugene52
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« Reply #1 on: March 28, 2009, 07:48:32 pm »
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Quote:Posted by Paul A
Anyone ever heard of it? Used one?
I've got hold of one that wasn't working (It is now - all that was wrong was the internal Nicad Batteries were the originals - about 20 years old I'd guess)
Haven't had a chance to try it out as yet.

Also - Can anyone suggest a replacement for the TRF730 transistor? (400v 5a I think......)




Hello here are specs for the old part  and specs for the new replacement IRF840 .

Regards......................Eugene52

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IRF740.pdf
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Offline Paul ATopic starter
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« Reply #2 on: March 29, 2009, 10:24:52 am »
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Thanks Eugene!

Here are a couple of pics...

The nicad pack was originally 8.75 volts do you think 9.4 volts would be o.k?




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« Last Edit: March 29, 2009, 10:37:32 am by Paul A »
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