Philips Electronics
Supply circuit with power-down for telephone set peripherals
Philips Electronics
Control circuit for switched-mode power supply
Philips Electronics
Hands-free IC
STMicroelectronics
VIDEO AND AUDIO SIGNALS SWITCHINGS FOR THE PERI-TELEVISION PLUG
Philips Electronics
Call progress monitor for line powered telephone sets
Unspecified
VERSATILE TELEPHONE TRANSMISSION CIRCUITS WITH DIALLER INTERFACE
Philips Electronics
Versatile speech/dialler/ringer with music-on-hold
English