ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  

 

previous: Johnathan Foy i was wondering, is there ANYWAY i ... -- 6/14/2000 8:26 PM view thread

Re: is there ANYWAY i can get the amz led indicator to work?

6/14/2000 9:08 PM
Jim
Re: is there ANYWAY i can get the amz led indicator to work?
To convert to a positive ground system you would need to use a 2N3904 NPN with b-c-e connected just as shown in the diagram that you posted. The LED would be reversed and V- would connect to the current limit resistor above the LED.  
 
Jim

 
Replies:
Johnathan Foy so i can just use a 2n3904 in place of the of the 2n3906 and change component polarity/orientation? -- 6/14/2000 10:10 PM