Sequential Arrow (CB6377E)

We found this circuit in an Electronics World of 1967. The components are of the time and incandescent lamps are used.

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Narrow Range VCO 4046 II (CB19079E)
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
Luminous Power Flasher (CB20339E)
This old circuit is suitable for signaling applications. The lamp must be incandescent, and the...
Half Wave Operational Rectifier (CB17023E)
In the figure we show how the half wave rectification of a signal can be done using an operational...