Unisonic Technologies
FM receiver circuit for battery supply
Philips Electronics
2 x 1 W portable/mains-fed stereo power amplifier
Philips Electronics
FM radio circuit for MTS
Philips Electronics
FM radio circuit
NXP Semiconductors.
1 W BTL mono audio amplifier with DC volume control
Philips Electronics
Low voltage PLL stereo decoder
Philips Electronics
3 W mono BTL audio output amplifier