| This circuit is designed to replace the moving coil centre-zero meter which is used as a tuning indicator in many receivers. Th...
| This circuit is designed to replace the moving coil centre-zero meter which is used as a tuning indicator in many receivers. Th...
| This oscillator uses a 741 oparnp (ot; 1/4 of a LM 324) as its active component. If features an interesting and effective method to st...