Hello all!
I have a few beginner's questions about the construction of a basic headphone practice amp circuit found here:
**broken link removed**
a) the circuit diagram has three connections (two at the input stages and one near the battery) laballed B. Are these connected together?
b) at pin 8 of IC1 is C8. This is not covered in the legend. Safe value?
c) Q1 and Q2 are presumably input boosting npn transistors. I can't find any BC-549's locally. Any recommended equivalents?
d) I'm guessing from the diagram that P1 is what I would label VR1 and is a 50kohm audio taper pot. Okay to use a 100Kohm if I can't find a 50k?
e) The capacitor values are all in microfarads with the exception of C7? And the designation x16 would be the operating voltage? (i.e. 2.2x16 would be 2.2 microfarads at 16volts?)
Thanks!
Cheers
Chris
I have a few beginner's questions about the construction of a basic headphone practice amp circuit found here:
**broken link removed**
a) the circuit diagram has three connections (two at the input stages and one near the battery) laballed B. Are these connected together?
b) at pin 8 of IC1 is C8. This is not covered in the legend. Safe value?
c) Q1 and Q2 are presumably input boosting npn transistors. I can't find any BC-549's locally. Any recommended equivalents?
d) I'm guessing from the diagram that P1 is what I would label VR1 and is a 50kohm audio taper pot. Okay to use a 100Kohm if I can't find a 50k?
e) The capacitor values are all in microfarads with the exception of C7? And the designation x16 would be the operating voltage? (i.e. 2.2x16 would be 2.2 microfarads at 16volts?)
Thanks!
Cheers
Chris