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DPDT - transistor

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.
 
T

Tom Biasi

Jan 1, 1970
0
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 PC


Yes, its possible. But you may want to look into solid state relays.
Tom
 
J

Jonathan Kirwan

Jan 1, 1970
0
Yes, its possible. But you may want to look into solid state relays.

Until you have to buy one. Those I've looked at aren't exactly cheap.

Jon
 
J

Jonathan Kirwan

Jan 1, 1970
0
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.

What are you switching and how are you controlling that?

Jon
 
K

kell

Jan 1, 1970
0
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.

You'll still need a switch.
 
J

Jonathan Kirwan

Jan 1, 1970
0
controlling via PIC 16f873a

If you look at http://www.maxlean.com/motorcyclepages/tre.htm 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.

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
 
K

Ken Moffett

Jan 1, 1970
0
[email protected] wrote in @u72g2000cwu.googlegroups.com:
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.

I think a DPDT transistor configuration is refered to as an "H-bridge".
Goggle that. Standad fair for a uC.
 
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