This circuit was found in a 1969 Motorola documentation. The FET admits an equivalent. The circuit has high input impedance and is powered by voltages from 6 to 30 V.
We found this transmitter in 1980s documentation. Coil data is found next to the diagram and...
The 4528 is a dual-retriggerable monostable that needs only the timing network formed by R and C...
This circuit for analog TV was found in a 90s EDN. The integrated circuits used are from that time...