Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Scott216 wrote:I just picked a kill-a-watt up that's the same design as the one in this thread. Instead of soldering the tweet-a-watt leads to the surface mounted chip 2902, are there connections on the tan side of the circuit board that I could more easily connect too. Wouldn't there be several options for GND and 5V - just getting those two from an easier location would make the soldering twice as easy.
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
minerva wrote:Scott216 wrote:I just picked a kill-a-watt up that's the same design as the one in this thread. Instead of soldering the tweet-a-watt leads to the surface mounted chip 2902, are there connections on the tan side of the circuit board that I could more easily connect too. Wouldn't there be several options for GND and 5V - just getting those two from an easier location would make the soldering twice as easy.
That's a good idea. Use a multimeter with continuity measurement to poke around until you find convenient pins or component leads that are connected to the +5V and ground pins on the opamp.
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?
Re: missing op-amp chip in kill-a-watt?