This is my relay circuit.
http://www.tdsupplies.com/Liftmaster395LM.html
I am using a standard switching NPN transistor to simulate a press of the mini push button (button on front) I can't get it to work. Please help.
Here is my circuit.
Thanks!
If it's not a circuit... no current will flow.
When no current flows... you get no work done.
Transistors are not relays... the "switching" part also has to be part of the "circuit" or the "turn on with a switch" part.
Please, you can do yourself a big favor and get some more info about transistors.
Like maybe a place like this: SECARS Homepage - SECARS
You do need to know a little more about transistors...
I would include a 470 ohm (or higher) resistor between the base of the transistor and you control switch. Because 5 Volts into a base with no current control resistor will kill you transistor instantly.
When the transistor switches off the relay will produce a large reverse voltage this will also kill your transistor. You will need a "free wheel" diode to protect your transistor.
Please go read up on transistors, Transistor - Wikipedia is a good place to start.
Good luck
Chewie B
His last post was an equally non nonsensical circuit, which generated exactly the same kind of responses......
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1253482784/0#0
I am really sorry for posting with such little knowledge of the topic. Thanks for the links though.
I couldn't find my last thread so I made another. Sorry.
Did you look at this about relays:- Motors 1