This circuit is from an old Electroics Now. Its purpose is to protect the fax and modem lines of two computers of the time. Suppressors are types of the time.
This buffered version of the previous circuit appeared in an article in the September 1989 Radio...
This circuit consists of an improved version of the CIR5892, using two transistors and adjusting the...
This circuit was found in a 1977 Signetics manual. The 556 consists of a 555 double and the...