Scheme provides automatic power-off for batteries


Posted on Mar 21, 2013

The circuit in Figure 1 provides a simple and inexpensive way to protect one of the most valuable components in portable applications: the battery. Applications include all portable equipment that requires a limited time of operation, such as test instruments, guitar tuners, and electronic toys. Pressing the on/off momentary switch starts the cycle, and the circuit provides power to the application circuit.






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