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Cell-Phone-Controlled Audio/Video Mute Switch: |
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Cellular Phone calling Detector: Flashes a LED when
detecting an incoming call. Powered by one 1.5V cell |
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Cordless Phone Backup: |
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Dualvoltage Supply Powers SIM Card: 01/20/00
EDN-Design Ideas / PDF contains multiple circuits - scroll to
find this circuit. |
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Mobile Cellphone Charger: |
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Tiny Efficient High Power LED Camera Flash Solutions for CellPhone Applications: Linear Technology Design Note 1009 |
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Passive filter cleans up power line communications:
09/20/2001 EDN -
Design Ideas / Many applications require the design of custom analog
filters (Reference 1). The application for this design required simple
and low-cost I/O filters for PLC (power-line communications), where low
power consumption is a crucial factor. Figure. |
