You can find sample setups of a simple two-transistor LC-based Peltz oscillator ... 10 KΩ and 0.01 µF RC connected to the common emitters of the Q1 and Q2 2N3906 transistors. The subtle ...

A very simple but highly efficient combination lock circuit is shown in the figure ... to be "ON" (binary state "1") to forward-bias the transistor, energize the relay (used in normally open ...

Conversely, the Seebeck effect lets a thermoelectric generator (TEG) create a voltage across a junction (and an electric current if the circuit ... is formed by the 2N3906 transistor and a ...