Re: Voltage drop

On Jan 29, 9:59 pm, "ydoubl...@xxxxxxxxx" <ydoubl...@xxxxxxxxx> wrote:
Hi all,

I had a circuit of output = -3V (for a lcd supply). However, when i
connect the lcd up, the voltage to that pin drops to -0.7V. Initially
I thought it may be due to the insufficient current, hence i changed
the DC convertor in the circuit to a higher power. The voltage still
drops to -0.7V.

Any reasons what caused the drop in voltage?

PS: the drop is actually increase. (-3.0 to -0.7)

Tks
ywz

I've seen things like this happen with poor ground connections. Check
your grounds to be sure they're making good contact.
.

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