The circuit shown consists of a power stage for relay excitation. 2N3053 can be a BD135 and 2N406 can be replaced with a BD136. R3 depends on the trigger voltage.
This circuit is from 1977 documentation, but can be assembled with BC548 for Q1, Q2 and Q4, BC558...
This is a simple voltage-controlled oscillator using the 4049. The base frequency is given by C1....
This transistorized oscillator, a modification of the Colpitts oscillator, was found in the...