2N4987 and 2N4990 (IP057E)

Unilateral switch (SUS) with 8 V of trigger voltage. This component is used to control SCRs and other applications.

Announcing Two New Low-Cost, Feature-Rich PIC32 Curiosity Development Boards from Microchip
Rapid Prototyping Boards for 32-bit Applications Include Peripherals, Easy-to-use Interface and...
OR gate with the LM3900 (CB4032E)
The circuit presented emulates an OR gate with the LM3900, operational transconductance amplifier....
Battery Monitor (CB4371E)
This circuit was found in an English magazine from 1979. The magazine no longer exists, but the...