For the 1 MHz frequency, the pass band of this filter is only 120 Hz wide. The filter is suitable for telecom applications and its impedance is 600 ohms.
This old amplifying stage was found in radios and small amplifiers of the time. The circuit is...
This crystal-controlled oscillator can generate signals as high as 200 MHz. The L1 coil is made up...
The circuit shown in the figure is triggered by an input voltage determined by the setting of P1....