Found in old documentation, this circuit can use modern equivalent components. The signal has good strength thanks to the use of a power transistor. The Q1 transistor is a unijunction of the time.
This circuit is from a documentation on the MC1539 from Motorola and may, however, be implemented...
This circuit makes na incandescent lamp flash fast producing the stroboscopic effect. The speed is...
This interesting circuit found in an Elektor from the 90s controls loads in four quadrants of the driving...