This circuit was found in Motorola documentation from 1968. The transistors are from the company, and the power supply is rated at 22 V.
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...