Found in an American publication from 1968, this circuit generates pulses at a rate of 2,500 per second. The transistor can be replaced by a modern equivalent.
This circuit, ideal for those who have signal problems in the UHF band, mainly in the reception of digital...
The frequency of this traditional crystal oscillator (XTAL) depends only on the used crystal,...
This is not such a sophisticated application, as it uses the two timers of a 556 in its normal...