Found in a 1964 Electronic Design this circuit makes use of components of the era. The output is 2 V peak to peak and the input is 2 V. The maximum frequency depends on the employed components.
This circuit was found in the July 1994 issue of Electronics Now magazine. The relay can be rated...
Found in Linear Technology documentation from the 90s, this circuit uses an operational amplifier...
An stable multivibrator with 50% of duty cucle can be mounted using the 555 as shown by the...