Found in a 1967 Electronics World, this preamplifier uses an integrated circuit from that time, difficult to obtain today. The maximum frequency is 15 kHz.
The selected circuit was found in the Texas Instruments optoelectronics manual. RC and C1...
The operating range of this circuit ranges from 0.5 to 2 MHz and its gain is 11dB. Transistors can be of...
This digital buffer was found in the November 1993 issue of Electronics Now. The power supply...