Substitute boxes

[Purity]

Pardon my ignorance but a friend introduced me to substitute boxes for testing various components today. I didn't even know these existed, but what a great idea, for testing capacitors etc

It made me wonder if anyone use anything similar for testing arcade parts?

 

[Alpha1]

Pix?

 

[Purity]

This is a capacitor resistor substitution box. So it ranges between different resistor and capacitor values.

Nothing exciting to look at, but an interesting idea.

 

[Muppz]

crickey, not seen one of those since God was a lad.

last time I saw one of those was when I was still training in the 80's and only then because we were throwing them out!

 

[P-Man]

I dont know how you would 'test' a component using a substitution box...

They're ok for maybe teaching in a class, but there's no precision to them with the croc clip leads, the capacitance and resistance would be fairly changeable. ok for making your own circuits to light up lamps with a 9v battery, but not sure you can do much else with them

i'd say move on...

 

[forcefulfil]

maplin do a lot of gear for testing caps/transistors
but my multi meter does most too and monitors/power supply i usually re-cap anyway while im rebuilding it

forcefulfil2013-02-13 17:06:58

 

[Purity]

i'd say move on...

Fair enough

 

[Muppz]

We used them more for investigating faults than fault finding. when we were being taught basic tranny 1,2 & 3 stage amps we used one briefly in one lesson to observe differences in the waveforms caused by different R & C values by tagging these into circuit.

I can't see how they would be used for fault finding either unfortunately

 

[Purity]

Sorry I probably wasn't very clear in my original post. I didn't mean for fault finding as such, I meant more as a way of temporarily substituting capacitors or other parts etc that you suspect are faulty, so you can re-test with a known working part, and as a check that you are on the right track to fixing the problem

So, as Pman pointed out, "test" is probably not the right word that I used

Purity2013-02-14 13:23:53