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.
The circuit presented was found in the 1994 Linear Applications Handbook from National...
This circuit generates a signal of approximately 1 kHz, using an operational amplifier 741. The...
The component used in this circuit is uncommon today. The circuit is from Motorola's 1990 Linear...