This decorative object was found in a Signetics documentation from the 60s. The circuit uses neon lamps and must be powered by a high continuous voltage. The current is extremely low.
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...