IMPROVEMENTS IN AND RELATING TO TRIANGLE WAVE GENERATORS AND POWER AMPLIFIERS

摘要

A power amplifier is provided with a novel triangle wave generator (4) in which a more precise triangle wave is produced with the aid of logic circuits. The resulting generator (4) is able to operate at higher frequencies. A fast current sensing arrangement is then required for protecting conditioning circuitry (40) against over-current. This is achieved with a combination of a sensing coil (20) sensing the transistor current through conductor (30). The resulting amplifier can be powered by DC and used to amplify a sine wave for DC to AC conversion.