The transistor used in this circuit is uncommon today. AC124 or equivalent such as AC188K and 2N2431 can be used. The circuit is from the 80's and makes use of transformers.
In fact, this circuit from the 60's applies to photographic printers of the time, timing the...
This traditional phase displacement oscillator circuit was found in a documentation from the...
August 2017 - The PIC32MM microcontrollers of the Microchip 32-Bit Family can be obtained from...