Hi all
I'm looking at getting a s/h tacho for the clubby and would like to be able to check that it works before buying. Can I bench test or does it have to be connected to car wiring?

Any help much appreciated.

P.S. Can't believe how much fun it is to drive an old mini. Just popping down to the shops is an adventure!

Eiles

no simple way to test it - it's possible, but you'd need to make / buy something that simulates the make-and-break distributor output

if you want to test before buying, take your mini with you and hook it up

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did I tell you that I won a trophy?

Thanks for info Simon.

Cheers
Eileen

Its a little tricky...but you can inject a square wave into the unit...and vary the frequency etc

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"Show me the Mini!"

If you have a spare square wave generator lying around

I was going to ask 'what's a square wave?'.

Square wave can be defined as a non sinusoidal periodic waveform that can be represented as an infinite summation of sinusoidal waves. It has an amplitude alternate at a regular frequency between fixed minimum and maximum value with the same duration. Square wave generator are generally used in electronics and in signal processing. The square wave is the special case of rectangular wave. The square wave generator is just like a Schmit trigger circuit in which the reference voltage for the comparator depends on the output voltage.

a Schmitt trigger is a Comparator circuit with hysteresis implemented by applying positive feedback to the non inverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal.

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" A Hundred Years From Now It will not Matter what my Bank Acount Was,
The Sort Of House I Lived in, Or The Kind Of Car I drove ... But The World May Be A Better Place
Because I was Once Important In The Life Of A Child"

I just wondered how big a syringe I'd need to inject one....

Cheers, Ian

I think John is trying to say that it would be easier connecting the tacho to the car wiring......

I gave up after the first sentence!

Cheers John

I'll test it in the car.

Geeez John , you either have to go and take your meds , or go and get some new ones ,

bloody head hurts after reading that .

Hey John,

You can make your own SWG using the ubiquitous (been looking for a reason to use that word!) uA741 OP Amp...

http://www.circuitstoday.com/square-wav ... ing-ua-741

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"Show me the Mini!"

I think John has just learnt about the copy and paste function in his computerator...

https://www.efxkits.us/square-wave-gene ... ng-op-amp/

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did I tell you that I won a trophy?

hee hee, i was going to sayulater exactly the samelinular thing as John saidorator

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

After ALL that, are you still "appreciating" the help you've been given? Just as well you like driving them!