This oscillator version is from an RCA documentation from the 1970s. Transistors support modern equivalents and the power can be supplied in a voltage range of 5 to 12 V. For Q2 we suggest the BD136.
We found this circuit in the September 1994 issue of Electronics Now magazine. The circuit uses...
June 2017 - NXP's new 4 Mbit capacity NXH5194 memories are available from Mouser Electronics...
This circuit was found in a March 1988 Radio Electronics. The voltage scale is set at R3. 19 LEDs...