Thank you Bob, Sorry to display my ignorance but 1500 what, nf, pf?
Doug --- In [email protected], n...@... wrote: > > At 3/21/2009 06:20, you wrote: > >Hi Bob, > > > >Cut a long story short .. looks like I did not actually finish the circuit > >which with my memory is no surprise. > > > >While working on the second build have found that the 1500 caps between > >pins 1 and 5 are missing as are the connections to pins 4 and 11. I think > >the reason was that I did not know what the values were exactly. > > > >Sorry about this but could you tell me what the value is. > > > >Regards, > >Doug - GM7SVK > > The cap values are properly called out on the schematic. Pins 4 & 11 are > the supply connections for the op amp. Pin 4 is +12V & pin 11 is ground. > > BTW, although the TL084 should work fine, there are better op amp choices > available these days. I personally like the TLV2374 for its rail-to-rail > in/out capability, low crossover distortion & low cost. Then again if all > you have in your parts bin is an LM324 it should work fine for testing > purposes. > > Bob NO6B >
