Wien Bridge
This Vienna bridge oscillator generates a sinusoidal signal whose frequency depends basically on C2 and C4. The circuit is from an Electronics Now from December 1993.
The circuit presented is a Japanese commercial radio from the 1960s. With a 4.5 V supply, it is a...
This is the receiver for the earlier system published in the August 1988 Radio Electronics...
This circuit generates a 1 MHz signal for general equipment calibration. The circuit is from an...