Universelle OTA-PLL (ZF-Verstärker mit PLL CA3080 Demodulator)

"Compressors are now being used on an ever-increasing scale. They may be found in tape recorders, intercom systems and baby alarms, public address systems, discotheques and of course broadcast transmitters. A compressor supplements a manual volume control and allows a system to adjust itself to a wide range of input signals with little distortion. The design described here should find a wide range of applications with the electronics enthusiast."