This high frequency or RF amplifier was found in a 90s Popular Electronics. The circuit can be redesigned to operate in different frequency ranges.
We found this filter in the 1990 Motorola Linear Databook, but it can be implemented with other...
Instead of the lamps, LEDs can be used in series with 470 ohm resistors. The circuit is from an...
This low current solenoid driver was found in an ancient American documentation. The solenoid must be...