This circuit was published in the December 1987 Radio Electronics magazine. It uses two 555s to drive 6 flashing LEDs.
This circuit was found in many record players with crystal phono pickups. The output power is 800...
The 8038 is an integrated waveform generator (sinusoidal, triangular and rectangular) from...
This protector was found in an Electronics Now from the 90s. The 250 V transient suppressors are common...