rf preamplifier

A small amplifier with nice characteristics: Tendency of catering: 15V. Force of expense: 4.2Wrms in the 4W. Minimal signal of entry: 94mVp-p with preamplifier, 0.65Vp-p without the preamplifier. More: Materially: R1=2.2kΩ R2=330kΩ R3=4.7kΩ logarithmic potentiometer R4=330Ω R5=1kΩ R6=1.5Ω C1,...

The preamplifier circuit is designed to offer appropriate loading for phono cartridges with reluctance. It achieves a gain of approximately 25 dB at 1 kHz (converting an input of 2.2 mV to an output of 100 mV). The circuit...

The circuit utilizes a tuned circuit for frequency selection, designed to operate at approximately 51 kHz. The 2N3565 transistor amplifies the output generated by the tuned circuit. The described circuit operates on the principle of resonance, where the tuned circuit...

This preamplifier is designed to interface with CD players, tuners, tape recorders, and similar devices, providing an AC voltage gain of 4 to drive less sensitive power amplifiers. Given that modern Hi-Fi home equipment often comes with small loudspeaker...

In recent years, following the introduction of CDs, vinyl recordings have nearly disappeared. Nevertheless, a phono preamplifier remains useful for listening to old vinyl discs from a well-preserved collection. This simple yet efficient circuit designed for inexpensive moving-magnet cartridges...

This circuit is primarily designed to provide a microphone input for standard home stereo amplifiers. Utilizing a battery supply minimizes the risk of low-frequency hum interference from mains power, simplifying the connection to the amplifier by eliminating the need...