[sdiy] breadboard woes

[Elain Klopke]

I'm measuring in DC.

Measuring in AC gives me 2.03 volts at the source pin, before and after all
the resistors.

connecting the resistor to the positive supply and measuring in DC gives me
a reading of 5.06 V as if it was a plain bit of wire.

this is baffling because I checked the resistor with the resistance
function again and it measures fine.... I even switched to the Hz function
and measured the output square waves from the chip and got the expected
frequencies.

On Tue, Apr 4, 2017 at 2:00 PM, Byron G. Jacquot <thescum at surfree.com>
wrote:

> Are you measuring AC or DC volts?
>
> 2.4VDC might be an OK reading for a 5VAC square wave, depending on how
> your meter integrates it.
>
> -----Original Message-----
> From: Elain Klopke
> Sent: Apr 4, 2017 12:43 PM
> To: *SYNTH DIY
> Subject: [sdiy] breadboard woes
>
> So I was trying to get a reading on my breadboard to see how much voltage
> was lost between the input of three passive low pass filters in series and
> the output.
>
> My measurements between ground and:
> positive supply: 5.06 V
> Output from chip: 2.4 V (was expecting 5 V because digital square wave)
> junction of first and second resistor: 2.4 V
> junction between second and third resistor: 2.4 V
> after third resistor: 2.4 V ....
>
> All resistors measured at 5.07 kOhms. I'm not sure what's going on. Is my
> breadboard messed up somehow or am I missing something fundamental about
> electronics?
>
>
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>
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