Sure, you can use 2N3904 for the buffers in the master divider. Be
aware that the Emitter and Collector pinouts are *reversed* from the BC547!
I generally use BC549B for my general purpose NPN transistors. But I
also used up my stock of 2N3904. I found that the main difference is in
gain, with the 3904s having lower gain. For switching uses the gain
doesn't make a significant difference. The output is either on or off.
-Richard Brewster
hitchindave wrote:
aware that the Emitter and Collector pinouts are *reversed* from the BC547!
I generally use BC549B for my general purpose NPN transistors. But I
also used up my stock of 2N3904. I found that the main difference is in
gain, with the 3904s having lower gain. For switching uses the gain
doesn't make a significant difference. The output is either on or off.
-Richard Brewster
hitchindave wrote:
>Hi All.
>
>Has anyone successfully tried substituting 2N3904s for
>BC547s? Apart from the pinout being reversed, the specs look
>very similar, and I have lots of them.
>
>They would be going in a CGS22 master divider, and I guess
>they're being used there as switches, so the difference in spec.
>is hopefully not critical.
>
>Cheers,
>
>Dave K
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>See the following URLS for the CGS Modular Synth home page:
>Main: http://www.cgs.synth.net/
>Secondary: http://otherunicorn.0catch.com/synth/
>Yahoo! Groups Links
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