This flasher circuit consists of an astable multivibrator with the frequencies given by the capacitors. The circuit is from 1965 using light bulbs, but LEDs can be used. Power comes from 4 batteries.
Found in a documentation from the 90s, this circuit limits and amplifies a voice signal in the 800...
This circuit is from an Argentine publication from the 1970s but can still be assembled with...
This simple LDO, or low voltage drop regulator was found in an Electronic Design from the 90s. The...