• Member for 10 years, 5 months
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  • Nagpur, India
What are the ways to allow/prevent a car engine from starting up?
1 votes

Probably late to answer this question; I'll do so anyhow. In my old car ( no fuel injection, had a distributor+carburettor ), what I did was to pull a wire from the distributor earth into a switch ...

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Why does a relay open gradually when driven by 555 through an emitter follower?
Accepted answer
0 votes

Frustrated I eventually tried it all over again from scratch; and it worked! In all probability it was a poor connection at some point.

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Random time timer
0 votes

I assume the 555 is used in monostable configuration. The interval is determined by the RC, and C is fixed. R may be varied; for instance by using a LDR, or a thermistor. Thus the RC constant would ...

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