Found in a Popular Electronics from the 90s, this Wien bridge oscillator uses a single-source operating. The frequency can be calculated from the formulas in the previous circuit.
Suggested for use in cars and motorcycles, this circuit was found in a 90s Popular Electronics. The...
This digital clock with common integrated circuits for hours and minutes was found in a...
This circuit generates signals that depend on Ct and the 10k trimpot adjustment. See the math...