Re: Problem switching a 5V mini relay from a low power LED (1,2v 2 mA) input

From: Jan Panteltje <pNaonStpealmtje@xxxxxxxxx>
Date: Mon, 28 May 2007 10:20:36 GMT

On a sunny day (Sun, 27 May 2007 18:30:22 -0500) it happened Spehro Pefhany
<speffSNIP@xxxxxxxxxxxxxxxxxxxxxxx> wrote in
<625k53pnocv9ua76vc40efe205lhfdjfui@xxxxxxx>:

Maybe it's not getting DC, but rather some short duty cycle pulses.
You could try using a CMOS 555 as a monostable and drive the relay
with that. Pull pin 2 low with the optotransistor.

You are so smart, yes I missed a clue 'buzzing'...

Maybe just capacitor parallel to the relay would work too?
.

Follow-Ups:
- Re: Problem switching a 5V mini relay from a low power LED (1,2v 2 mA) input
  - From: dahl . larsen

References:
- Problem switching a 5V mini relay from a low power LED (1,2v 2 mA) input
  - From: dahl . larsen
- Re: Problem switching a 5V mini relay from a low power LED (1,2v 2 mA) input
  - From: Spehro Pefhany

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