This circuit was obtained from Motorola documentation. It generates light pulses at a rate of 120 per minute. Equivalent transistors can be used. The circuit can also excite high brightness LEDs.
This circuit is of an old Argentine magazine of the 70's. The difficulty for its assembly is in...
This passive circuit was found in a 1980s documentation. The circuit serves to indicate the...
In the figure we have the way to implement a monostable with an operational amplifier LM393. The...