hi fi phono preamp circuit | Next Electronics

When connected to popular Stax Class 1 electrostatic headphones, the design illustrated in the figures may operate across the full audio bandwidth with a transmission voltage close to 200 Vp-p. Although the resistor divider can be modified to provide a...

2 x 60 W audio amplifier circuit

The circuit diagram presented is for a 2 x 60 Watt stereo amplifier utilizing the LM4780 from National Semiconductors. The LM4780 is an excellent audio amplifier integrated circuit capable of delivering 60W RMS power output per channel into 8-ohm speakers....

TBA820 Amplifier

A very useful audio amp in an 8-pin DIL package. The IC features a very low minimum working supply voltage of 3V, low quiescent current, good ripple rejection, no crossover distortion and low power dissipation. More: Maximum supply voltages is...

200 watt Audio amplifier with STK4050

This complete high quality, low noise mono audio power amplifier is based around the Hybrid Integrated Circuit STK4050 manufactured by Sanyo. The circuit incorporates volume and has a maximum music output power of 200W. The circuit incorporates an on board...

Audio amplifier for portable radio receiver

This is a simple audio amplifier circuit built around the BEL1895 1W audio amplifier integrated circuit (IC). This circuit serves as an alternative to more complex audio amplifier circuits designed for portable radio receivers. It does not require a driver...

1W BTL Audio Amplifier

The TDA8581(T) from Philips Semiconductors is a 1-watt Bridge Tied Load (BTL) audio power amplifier capable of delivering 1 watt of output power into an 8-ohm load at a total harmonic distortion (THD) of 10% while using a 5V power...

50mW amplifier schematic

Here is a little audio amplifier similar to what you might find in a small transistor radio. The input stage is biased so that the supply voltage is divided equally across the two complimentary output transistors which are slightly biased...

250mW audio amplifier

This is a simple three-transistor audio amplifier circuit capable of delivering 250 mW to an 8-ohm speaker. Complementary transistors BC337 and BC227 (Q3 and Q2) are utilized as the output pair, while transistor Q1 (BC547) functions as the preamplifier. The...

Three-Level Audio Power Indicator circuit

This circuit is designed to indicate the power output level of any audio amplifier. It is simple, portable, and displays three power levels that can be set to any desired value. The circuit operates by utilizing a combination of resistive voltage...