Anyone out there, if it is possible make a suggestion as to how to replace a dpdt with bunch of transistors.
Just wondering if it is possible to do, as I like the neatness of transistors of a dpdt relay on my PCB.
DPDT - transistor
Mar 05, 2006
8 Replies
Yes, its possible. But you may want to look into solid state relays. Tom
Until you have to buy one. Those I've looked at aren't exactly cheap.
Jon
What are you switching and how are you controlling that?
Jon
controlling via PIC 16f873a
If you look at
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about a third of the way down you will see a bunch of wires connected with a dpdt. I would like to do the same thing with some transistors.
You'll still need a switch.
Thanks. I'm not sure what the three wires do, though. May I assume one is ground, one 5V power, and one is 'signal?' And if so, which is which? If not, what's your interpretation of the three wires?
Also, from the measurements, I gather they use a 1k resistor in series with the GPS resistance, with +5V as their source voltage on one side of the 1k, and measure the node voltage in something like this:
+5V | / \\ 1k / | +--------> measure this point's voltage | GPS | | --- ///Is that your take on it?
Jon
snipped-for-privacy@persona.ca wrote in news:1141596214.848191.225350 @u72g2000cwu.googlegroups.com:
I think a DPDT transistor configuration is refered to as an "H-bridge". Goggle that. Standad fair for a uC.
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Have Fun! Rich
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