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Controller Provides Multiple Alarm Driver Formats: 01/15/98 EDN-Design Ideas / (added 08/05) DC/DC converters for
use inside the telephone handset require operation from the high-source-impedance phone line. Additionally, the CCITT specifications call for
maximum on-hook power consumption of 25 mA. The dc/dc converter in Figure 1 is 70%-efficient at an input power of 25 mA, providing 5V at 3.4
mA. Controlled, low-peak switch current ensures that the 48V input line experiences no excessive voltage drops during switching.
Converting Light to Digits: LTC1099 Half-Flash 8-Bit A/D
Converter Digitizes Photodiode Array: AN33 Linear Technology This application note describes a Linear Technology "Half-Flash" A/D
converter, the LTC1099, being connected to a 256 element line scan photodiode array. This technology adapts itself to handheld (i.e., low
power) bar code readers, as well as high resolution automated machine inspection applications. (app note added 6/06)
Correlator Works in Presence of Noise: 02/03/94 EDN-Design Ideas / (added 3/03) Clipped-signal Correlator outperforms any
resistor-capacitor clipped-signal Correlator, and the circuit has no race paths
Crowbars and Clamps: MicroNote 106 from Microsem Reviews the major
differences including the low on-state voltage of the crowbar and the ease of transition from conduction to non-conduction for the clamp.
Trade-offs and applications are discussed. (app note added 6/06)
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