6W Variable Tone Siren (CB25213E)

This CMOS circuit was found in the July 1990 Radio Electronics magazine. Power is for a 12V supply.

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Successive Tone Decoder PLL (CB3958E)
This circuit with the known PLL 567 can be found in other versions in this section and in this...
ST Microelectronics STSPIN32F060x Three Phase 600V Controller
ST Microelectronics STSPIN32F060x Three Phase 600V Controller This STMicroelectronics component...
Power Supply Monitor (CB25398E)
The purpose of this circuit is to monitor the output voltage of a power supply. The under and over...