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simple transistor circuit
is there a simple transistor(or any) circuit that could be used to detect a specific(range) voltage, say if a input was 2-4volts the output would show a logic 1,, but with 0-2or4-6volts would be logic 0?
well it is ok if the detector is fixed, but i would want more of a switching system where it detects from 2 to 2.2v(within that range), then the next similar circuit will switch from 2.2 to 2.4, the more precision the better, i would make 25 or so of these
im hoping to keep it to 2 transistors, few resistors, maybe a capacitor, i want it to switch on right away then delay a few ms(tops maybe) after the signal to offstate, \
that window circuit is definitely what im looking for, but if I kept that window narrow enough would I be able to do that with just one amp?
The LM3914 Dot/Bar Display Driver maybe a good option, 10 outputs, can drive TTL or cmos logic levels and can be cascaded for more outputs.
and requires few external components.