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IC tester

Opamp, 555, comparator, Not, Nand, Nor

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It tests the following ICs:

— Single Op Amp
— Dual Op Amp
— Quad Op Amp
— 555 timer
— LM393 comparator
— LM339 comparator
— Not gate
— Nand gate 2x4 in / 2 out
— Nand gate 2x4 in / 4 out
— Nand gate 2x4 in / 4 out with pull up resistors
— Nor gate 2x4 in / 4 out

Birch plywood box with Vieux Cheine and Shellac finish

12 Vdc external split power supply.

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carbono.silício wrote 6 days ago point

@Mike Szczys 

Forgot to add that except the box hinges, all parts are recycled.

I've also added in files two images with each IC instructions, sorry only in Portuguese but i think it's understandable.

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Alan Green wrote 08/13/2019 at 20:36 point

Wow. This is gorgeous! 

Could you please share some details about the matte black surface behind the components? I suppose you had to lay that down before soldering components?

Also, where did you get the box from? It looks like it has led an interesting life.

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carbono.silício wrote 08/13/2019 at 20:43 point

Hello, thank you.

It's a common black self sticker paper and yes of course!

Box was built from scrap Birch plywood taken from local furniture factory.

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Mike Szczys wrote 08/13/2019 at 18:33 point

This looks cool, can you talk a little bit about how the tests for each chip are performed, and maybe the circumstances where you want to test these chips?

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carbono.silício wrote 08/13/2019 at 20:19 point

Hello, yes.

It all started because i savage all kinds of electronic parts in order to build what i like and need.

During the removal of the IC's many do not survive, so i needed some kind of tester to have in hand for (at that time) the most often scraped IC's that i could get.

I build many tools i use, this IC tester box is also part of it and it should be for me aesthetically pleasing and a good wiring and soldering challenge. It was my first "wire track" circuit.

Each test IC type uses typical simple circuit taken from the web in order to try basic functions, like all on/off outputs op amps, 555 as astable, etc. Basically it just tests for possible future use and i know that not all conditions are met for the IC's to work properly as if they were new but i know that i can keep them in stock if tests are passed.

All in all it works great, it's reliable and till today i do not recall to have found an IC tested in this box that was not in good shape for more complex use.


Hope i covered your questions, if not, i'll be happy to answer anything else.

Thank you

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Mike Szczys wrote 7 days ago point

Ah, I like that. Nice to know the salvaged bits are all in one piece before going into stock.

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