Speech signal A/D converter using an instantaneously-variable ba
Squelch circuit for a radio receiver
Stabilized transistor amplifier
Superfluorescent broadband fiber laser source
Superluminescent diode
Switchable bandpass filter
Switched capacitor filter circuit
Switching circuit useful in telephone conference systems
Synchronized compressor and expander voice processing system for
System for reproducing sound information
Telephone line amplifier
Telephone network protective coupler
Temperature and supply voltage compensated amplifying device
Temperature sensor
Third harmonic signal generator
Transistor amplifier
Transistor amplifier
Transistor amplifier
Transistor amplifier
Transistor amplifier