This circuit from Motorola is from 1968, appearing elsewhere on this site. The transistors admit equivalent and the relay is of the sensitive type for low voltage, according to the power supply.
This circuit was found in American documentation from the 60's. The transistors are made of...
This divider by 8 is synchronized because it is implemented based on TTL or CMOS logic according to the...
This circuit causes the LED to flash at a frequency determined by the capacitor and resistor...