Constant current source LM3900 (CB25176E)

This fixed current source uses a Norton LM3900 amplifier. The maximum current depends on the transistor used. In this case, it is fixed at 1 mA.

Zener Load Protection (CB4141E)
In the figure we show a simple way to use a zener diode to protect a load against overvoltage. The...
DC Motor Control Shield (CB4597E)
DC motors from 6 to 12 volts and currents up to 2 amps can be controlled with this circuit. The TIP41...
Two-Tone Siren (CB194E)
The gates of a 4093 can be used form a two-tone siren as shown in the configuration of Figure. The...