Re: voltage drop at power source -what is happening?
- From: "catfarm" <anonymous@xxxxxxxxxxx>
- Date: Fri, 15 Apr 2005 06:46:35 -0700
Its an audio modulator. It uses 2x quad opamps (TL074) and some LED/CDs
pairs to modify the sound.
Interestingly enough when I pull the chips I read a nice 9V at the plug.
Putting in one chip drops the voltage to 3.7V. Bad chip? They aren't
getting warm when the circuit is running.
Im using a 9V source that comes from a 7809 and should be able to put out
500mA.
"Lord Garth" <LGarth@xxxxxxxxxxxx> wrote in message
news:yUm7e.1017$zq4.138@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> "catfarm" <anonymous@xxxxxxxxxxx> wrote in message
> news:5LqdnY_qv8ykZcDfRVn-rQ@xxxxxxxxxxxxxx
>> I have a circuit that is supposed to run on 9V. When I connect my 9V
>> (well
>> regulated) power supply to the plug Im only reading ~2.2 V. What would
> cause
>> this? Is the implication that there is a short to ground somewhere?
>>
>>
>
> You're either not 'well regulated' or you're attempting to pull more
> current
> than
> the regulator can supply.
>
> How about telling us what the device is that you are powering and the
> specs
> of
> the power supply.
>
>
.
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