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voltage spike detector

voltage spike detector

voltage spike detector

(OP)
Is there a circuit out there (instead of an oscilloscope) that can detect higher than 28V voltage spike. This circuit should have an indicator (LED) that a greater than 26 Volts spike has been detected. I expect the spike to be 100 nanoseconds.
Thanks in advance.

RE: voltage spike detector

(OP)
thanks peterb!!!but I am looking for a cheaper alternative to oscilloscope (w/ trigger).
This circuit must detect a voltage spike greater than ...say 26volts and if it detects one, there should be a way of knowing it like a simple LED.
I tried to use a comparator but op-amps operate at not more than 10MHz response and what I know is that , spike ranges at 10-100 nanoseconds that is why we need high bandwidth scopes w/ trigger to detect one.

RE: voltage spike detector

What is the normal voltage on the line ? DC or AC ?
Is this one piece or for production (How much may it cost?)

Is it enough to indicate/store one event or do you need
more info ? What ?

<nbucska@pcperipherals.com>

RE: voltage spike detector

(OP)
Normal Voltage would be 26 VDC. This spike detector should indicate any event (eventhough spike occurs every second) by LED (or TTL output or latch circuit).

RE: voltage spike detector

If you latch it, it will indicate the first event only.

Are you speaking about a 28 V spice superimposed on 26V DC or only 2V ?

What do you want to do if there are more spikes ?
What about their amplitudes and durations ?

<nbucska@pcperipherals.com>

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