This circuit was found in documentation from the 90s. The operational amplifier is NE5514, which is uncommon today. The configuration can be adapted to use modern components.
This lockable two-position servo control system was found in documentation from the 1990s. The...
This circuit is from a year 2000 documentation. It generates pulses as fast as a battery or as...
This circuit generates two signals in phase opposition. The frequency is determined by R1 and C1...