This circuit is from an1966 General Electric documentation. The Triac can be equivalent to 6 A or more, mounted on a good heatsink. Any diac can be used.
This 2002 circuit uses many more electrical components than electronics. The keys are common, and...
This circuit is from the National Semiconductor CMOS manual of 1977. What this circuit does is to...
This circuit warns you if you forget to turn off the car light and leave it. The circuit is from a...