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Battery powered buffer amplifier – Circuit Schematic
Battery powered buffer amplifier
This circuit has negligible loading and disconnects the cell for low supply voltage or overload on output....
Crt yoke driver – Circuit Schematic
Crt yoke driver
A 500 mV peak-to-peak triangular waveform about ground is input to the amplifier...
50Ohm driver – Circuit Schematic
50Ohm driver
To buffer a test generator to the outside world requires an amplifier with sufficient bandwidth and power handling capability. The circuit is a very simple unit...
High impedance low capacitance wideband buffer – Circuit Schematic
High impedance low capacitance wideband buffer
The 2N5485 has low input capacitance which makes this compound series-feedback buffer a wide-band...
Single supply AC buffer amplifier – Circuit Schematic
Single supply AC buffer amplifier
The input is dc biased to mid-operating point and is ac coupled. Its input impedance is 11 - OUTPUT approximately 500K at low frequencies...
Sine wave output buffer amplifier – Circuit Schematic
Sine wave output buffer amplifier
The sine wave output has a relatively high output impedance (1K typ). The circuit provides buffering, gain, and amplitude adjustment...
Microphone amplifier – Circuit Schematic
Microphone amplifier
This circuit operates from...
Ultra-high gain audio amplifier – Circuit Schematic
Ultra-high gain audio amplifier
Sometimes called the JFET µ-amp, this circuit provides a very low power, high gain amplifying function. Since µ of a JFET increases as drain current decre...
Transducer amplifier – Circuit Schematic
Transducer amplifier
This circuit is high-input-impedance ac resistance is 880 K, and a gain of 10 is ob-amplifier for a piezoelectric transducer...
Electronic balanced input microphone amplifier – Circuit Schematic
Electronic balanced input microphone amplifier
It is possible to simulate the balanced performance of a transformer electronically with a different amplifier. By adjusting the presets, the resistor ratio can...
Basic transistor amplifier circuits – Circuit Schematic
Basic transistor amplifier circuits
Typical component values are given for use at audio frequencies, where these circuits are used most often...
General purpose preamplifier – Circuit Schematic
General purpose preamplifier
Not much can be said about how the LM382 works as most of the circuitry is contained within the IC. Most of the frequency-determining components are on the chip...
Phono amplifier – Circuit Schematic
Phono amplifier
Used when maximum input impedance is required or the signal attenuation of the voltage...
470 Mw complementary-symmetry audio amplifier – Circuit Schematic
470 Mw complementary-symmetry audio amplifier
This circuit has less than 2% distortion and i&flat within 3 dB...
Bridge amplifier – Circuit Schematic
Bridge amplifier
This circuit is for low voltage applications requiring high power outputs. Output power levels of LO W into 4 ohm from 6 V and 3 V into 8 ohm from 12 V are typi...
Low cost 20 w audio amplifier – Circuit Schematic
Low cost 20 w audio amplifier
This simple inexpensive audio amplifier can be constructed using a couple of T0-220 monolithic Darlington transistors for the push-pull output stage. Frequency ...
Mixer preamplifier with tone control – Circuit Schematic
Mixer preamplifier with tone control
General purpose preamplifier/mixer accepts up to four inputs, has a gain of 1600, and provides bass and treble controls that can be varied ± 10 dB at 100 Hz ...
Preamplifier and high-to-low impedance converter – Circuit Schematic
Preamplifier and high-to-low impedance converter
Thiscircuit matches the very high impedance of ceramic cartridges, unity gain, and low impedance output. By "loading" the cartridge with a 2M2 input resistance,...
Wide bandwidth low noise amplifier – Circuit Schematic
Wide bandwidth low noise amplifier
ParMitic input capacitance ICi I 3pF tor LM5S, LF 156, and LF157 plut any additional layout capacitance) interact...
Voltage controlled variable gain amplifier II – Circuit Schematic
Voltage controlled variable gain amplifier II
The 2N5457 acts as a voltage variable resistor with an RdS of 800 ohms max...