[Test-Equipment] Need to shift pulse up 5V

[Mike Manes]

The common-base NPN (2N3904, e.g.) previously suggested by ?? is truly 
elegant.  Ground the base, run a 4.7K from the emitter to the -5V
clock and run another 4.7K from the collector to a +5V bus.  Take the
0 to +5 clock from the collector.  Two bits and 3 parts - how much
simpler can ya get?
73 de Mike W5VSI

On 5/1/15 8:43, Barry wrote:
> Ah yes - a comparator.  I like that idea and I should have thought of it.  I wish Radio Shack had an equivalent for the 311.
>
> Thanks!
> Barry - N4BUQ
>
> ----- Original Message -----
>> From: "Barry" <n4buq at knology.net>
>> To: "Test Equipment" <test-equipment at mailman.qth.net>
>> Sent: Thursday, April 30, 2015 11:37:27 PM
>> Subject: [Test-Equipment] Need to shift pulse up 5V
>>
>> I have a situation where a clock signal is pulsed to 0V from a normally -5V
>> signal level.  I would like to have that same waveform shifted +5V (e.g. the
>> pulse would go from 0V to +5V instead of -5V to 0V).
>>
>> Is there a convenient way to do this?  I thought this might be a somewhat
>> common problem and there would be a selection of "level shifting" chips but
>> I'm not finding that to be true.  I assume that if there's no dedicated IC
>> for this kind of thing, then perhaps a simple single transistor circuit
>> might do the trick but thought I'd ask first if there are any off-the-shelf
>> "standard" solutions to this.
>>
>> Thanks,
>> Barry - N4BUQ
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