A very simple and cheap tv antenna amplifier circuit built with BF961 a N–Channel Dual Gate MOS common transistor used for input and mixer stages especially for FM- and VHF TV-tuners up to 300 MHz. L1 ...

1 chip 40 W audio amplifier circuit diagram A 0.25 mA fuse (F1) should be installed. If using toroidal transformer, the fuse must be a time delay (slow blow) variant. Be sure to correctly earth the ...

Various techniques can reduce these errors, including inverted operating mode, dc biasing, small ac signal swing, proper selection of the op amp, and input impedance compensation.1 Matching the ...