Display brightness control (CB21614E)

Based on Allegro's A6275, this circuit controls the brightness of various displays. The circuit is valid for common anode 7-segment displays.

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Temperature Control (CB6003E)
This circuit functions as a thermostat triggering a relay when the boil control temperature...
Latching relay (CB25722E)
The figure shows how to connect a relay to obtain the latch effect. The circuit is from an...
Extension Bell (CB15685E)
With this circuit it is possible to use a DC buzzer (not a transducer) as an extension of the...