1W Power Amplifier with Electronic Volume Control based TDA8551

1W Power Amplifier with Electronic Volume Control based TDA8551
The TDA8551 chip by Philips is a bridge amplifier with output power of 1 watt at a supply voltage of 5V. In this case, current consumption in the silent mode is only 10mA. The chip is made ​​in 8-pin package and requires no heat sink, it can be used in a variety of small devices. Chip is equipped with thermal protection, has an internal delay circuit connecting the load - so that when you turn, you hear a wheeze

RF Amplifier Circuit : 1 Watt 2.3GHz based MRF2001

RF Amplifier Circuit : 1 Watt 2.3GHz based MRF2001
This the 1W RF amplifier circuit which used a common-base power transistor MRF2001, a class C amplifier. This RF amplifier delivers about 1 Watt power output with 8-dB minimum gain at 24V voltage supply. The frequency can be tuned from 2.25GHz to 2.35GHz. Applications include microwave communications equipment and other systems that require medium-power narrow-band amplification. The amplifier circuitry consists almost entirely of distributed microstrip elements. A total of six additional components, including MRF2001 are required to build a

1W Audio Amplifier Circuit based TDA7052

1W Audio Amplifier Circuit based TDA7052
This is the 1 Watt power audio amplifier based Phillip IC TDA7052. The circuit can be used for small audio amplification. The circuit is very simple and easy to build. It only required 5 external components to support the main power IC. Ideal supply voltage is 6V to 12 VDC. R2 is a linear potensiometer to adjust the volume. (more…)