Solid State Circuits 6 -
1. Wein Bridge Oscillator
* = hgh stability components
The prototype showed sufficient frequency variation to be used for both narrow and wide shift in an RTTY tone generator using transistors in lieu of switches S1 and S2.
The same circuit has been used as a 1750Hz tone generator for repeater access but needs a one second timing gate for the tone burst.
The 1n capacitors should be stable types like silver mica or polystyrene.
More details to follow shortly
2. Bridged Tee Oscillator