This circuit aims to increase the selectivity of receivers whose FI is 455 kHz. The circuit is from 1975 documentation. The transistors can be the modern BF494 equivalents.
ts component datasheet which can supply currents of 1 A (1.125 V and 400 mA (1.2 V). The inputs can...
We found this circuit in a 1982 publication. This transmitter sends its signal to any AM radio...
This simple circuit was suggested by the Electronics Handbook Volume XIII 1993. LED D1 emits light for...