We found this balanced modulator circuit for DSB and possibly SSB transmissions in US 1980s telecommunications documentation. The diodes can be replaced with equivalents.
This timer directly controls a load connected to the power grid through a triac. The circuit is...
A 3-input OR gate can be made with an LM3900 amplifier, as shown in the figure. The purpose of the...
This circuit doubles the frequency of an audio signal, thus changing its timbre. The circuit was...