[sdiy] Hollow low-pressure ladder filter

Paul Perry pfperry at melbpc.org.au
Mon Apr 29 16:18:56 CEST 2002


>> Is 12U7 the same as the ECC86?
>>
According to a sub book here, ECC86 = 6GM8

also 12U7 is 'close' to a 12AE7.

If that helps.
It might not, because the same book has 6GM8 'close' to 
our old friend ECC88!

paul perry melb aust




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