Definitions

1. adjective

Of an oscillator, not maintaining a constant frequency.

“The astable circuit was difficult to synchronize with the rest of the system.”

2. noun

A circuit that does not have a fixed frequency.

“The astable oscillator is commonly used in electronic circuits.”

3. noun

A type of electronic circuit that does not maintain a constant frequency.

“The astable multivibrator is used in many electronic devices.”