This circuit was obtained from a Philips documentation from 1968. The transistors can be replaced with equivalents, only with care so that the doubles are exchanged for matched pairs.
This circuit was found in a 90s Popular Electronics. The circuit operates in the range determined...
This is a conventional FM micro transmitter circuit already used several times on this site. The...
Found in American documentation from 1968 this circuit is based on discrete components in addition...