RF or even switching transistors like the 2N2222 can be used in this circuit. The capacitors are ceramic and the frequency is determined by the crystal.
This circuit allows modulating a laser diode with low frequency signals. The integrated circuit...
This AC amplifier using the 741 operational amplifier uses a dual supply from 5 to 12 V. The input...
This circuit is suggested by the Optoelectronics Sourcebook by Texas Instruments when AC signals...