This circuit is temperature stabilized. Modern equivalent transistors can be used, and the power supply can actually be between 9 and 12 V. The circuit is from an old documentation.
We found this circuit in the 1997 Linear Technology Applications. The components used were common at...
This circuit is from a simple TTL sequential system using 4 LEDs. The experimental circuit must be...
This simple field strength meter is from a transistor book from the 60's. The transistor is made...