| The Legion intelligent USB charge monitoring device from PLX Devices Inc fits between your phone or tablet and charger to monitor the chargi...
All items tagged with Time and phone (8)
| The iDVM digital multimeter from Redfish Instruments Inc. wirelessly connects to an iPhone, iPad, or iPod Touch to enable users to acquire,...
| Undesired listening-in to telephone conversations may be prevented by the present circuit, which requires only two components to protect...
| It is sometimes necessary to make a telephone conversation audible to more than one person at either end or to make a tape recording of i...
| The proposed transmitter provides an optical(infra-red). that is, wireless, connection to a head-phone. The receiver is described in the nex...
| This article is one from our 90s collection, the articles are downloadable as a PDF for all our members. Although the information we have on...
| Rectifying the buzzer signal on a telephone line results in a voltage that may be used to switch one or more loads, for instance, a light...
| Telephones are now readily and cheaply available: two identical ones and a handful of components enable a simple house-telephone to be s...