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.
One of the problems with common multimeters, especially analog ones, is that their low resistance scales...
This circuit is an alternative version of the previous one also found in the July 1995 Electronics Now...
This fish flame circuit was found in a 1971 magazine. The circuit can still be mounted with BC558...