ELM380 Battery Charger Timer Description The ELM380 is an 8 pin integrated circuit that is used to provide very long time interval outputs.
It is typically used for enabling the charge circuit in Nickel Cadmium battery chargers, but can be easily adapted for many other applications.
An express ‘one button’ mode is provided on chip specifically for rechargeable battery circuits.
In this mode, pressing the start button once initiates a user selectable 8 or 14 hour timing interval, after which the circuit shuts off.
If one prefers, pressing that same button multiple times will allow for user programmable intervals of from 2 to 77 hours.
The circuit requires a 60Hz full-wave rectified signal fo...

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