Emerson EM-Drive Clone

[Roctopus]

The folks over at FSB looked at the original and saw the transistor used was a MPSA18... if that helps.

Thank you so much!

[jewbacca]

The original pops something fierce, so I'm not surprised. Wire as per mad bean specs? Thanks!!

[dickjonesify]

I have a production EM-Drive that pops, too!  I see you used a 1M pull down.  Where, exactly did you put yours? Kind of new to this.  Any help is appreciated. 

[Roctopus]

I have a production EM-Drive that pops, too!  I see you used a 1M pull down.  Where, exactly did you put yours? Kind of new to this.  Any help is appreciated. 

I connected one side of the 1M resistor to Input and the otherside to ground.

[dickjonesify]

At the input jack?

[dickjonesify]

Sorry if that sounds dumb.  I mean, solder it directly to the tip at the input jack or the input side of the switch or something?

[Roctopus]

Sorry if that sounds dumb.  I mean, solder it directly to the tip at the input jack or the input side of the switch or something?

Sorry man, I should have been more clear. You can connect one side of the pull down resistor, 1M is what I used, to the Input connecting to circuit board and the other side to ground. You can also do this to the Output connecting to the circuit board and ground if you still hear popping.

I have drawn up an example using a version of Madbeans wiring diagram.


Here is an article that might help explain things better
http://www.muzique.com/news/pulldown-resistors/

[dickjonesify]

 Thank you, sir!
Very helpful.