Assertion: power transistor | /r/ObjectUse | used in radio transmitters
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text: According to their electrical characteristics and areas of application, transistors are classified as low-power low-noise transistors (used in the input circuits of radio amplifiers), pulse transistors (used in electronic pulse-forming systems), power transistors (used in radio transmitters), switching transistors (used as electronic switches in automatic control systems), phototransistors (used in devices for converting light signals into amplified electric signals), and special-purpose transistors.