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Visible Laser Driver Has Digitally Controlled Power Modulation - Maxim
Application Notes / 228 / Mar-10.....[App Note] |
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Voice Record/ Playback Circuit - The ISD1000A is a Direct Analog Storage
device which allows you to store 20 seconds worth of voice data on an IC chip which
can be play backed anytime. The data stored will stay in memory even if the power is
removed. To use the circuit below simple apply power to the circuit, press the record
button and hold. Speak clearly into the microphone. You have up to 20 seconds…. [Randy
Linscott's website] |
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Voice Scrambler - With this circuit you can modify how your voice sounds by
changing the pitch of your voice. This circuit can be connected to a phone and
with a duplicate circuit on the end of the phone line, you can have a scrambled voice
communication. The way the.… [Randy Linscott's website] |
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Voice Scrambler/Descrambler - This is a single-inversion voice
scrambler/descrambler. Though no longer useful for police scanners, it would be a fun
project for a hobbyist. It was designed for use on a 9-volt battery, but by changing
resistor values proportionately, it could be adapted to use whatever voltage is
available in your radio..... [Designed by Andrew R. Morris] |
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Voice-storage chips talk to each other - 11/05/98 EDN-Design Ideas.....Of
the many solid-state voice-storage chips available, the ChipCorder family from
Integrated Storage Devices (ISD, San Jose, CA] is one of the most user-friendly. A
single chip integrates nonvolatile voice memory, a microphone preamplifier, and an
output stage capable of driving a 16 Ohm loudspeaker.….Several circuits here, scroll
to find this one..... [Design Idea by Jerzy Chrzaszcz, Warsaw University of
Technology, Poland] |
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Volt Meter with Video Output - (schematic / Circuit design added 08/05)
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Voltage Mode Control IC/ AN-4128 - Fairchild Application Notes / (app note
added 6/06) |
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Voltage Regulator goes Digital - 11/24/99 EDN-Design Ideas...../ Power
consumption and failing batteries are key issues in battery-operated applications.
Features in the new generation of series voltage regulators address these concerns.
For example, National Semiconductor's LP2951 micropower voltage regulator provides a
logic-level output signal indicating a low regulated..... [Design Idea by Chuck
Wojslaw, Xicor Inc, Milpitas, CA] |
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Voltage to Current Conversion Apex-AN13 - Apex App Note..... |
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Voltmeter Monitors TTL Supplies - National Semiconductor Application
Note.....[App Note] |
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Volume Control (Aaron Cake) - based on DS1669 Digital Pot IC.....
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Volume Control (Rod Elliott) - A volume control using a linear pot that is
much better than most log pots (added 4/02) |
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Volume Control has Log Taper - 11-Apr-02 Issue of EDN Digital
potentiometers provide a compact and convenient way to attenuate audio-amplifier
signals. However, most such potentiometers suffer from at least one flaw a
nonlogarithmic step increment. To avoid this problem, a user must usually step the
potentiometer in a nonlinear sequence to simulate a logarithmic taper..... [Design
Idea by Doug Farrar, Los Altos, CA] |
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Wide Dynamic Range A/D Converters Pave the Way for Wideband Digital Radio Receivers
- 11/07/96 EDN-Design Feature With recent advances in data conversion,
mixers, and DSPs, digital radios are becoming more commonplace. But what are digital
radios, how do they work, and how do they differ from analog radios? [Design Feature
by Brad Brannon, Analog Devices Inc] |
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Wireless Home Security Implementing Keeloq® & the Picmicro® MicroController -
Microchip Application Note Published 12-Oct-99 (app note added 2/06)
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Wireless Local Network for Palmpilot Large Pdf - (electronic circuit added
4/05) |
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X-10 Home Automation using the PIC16F877A - Microchip Application Note
Published 8-Nov-02 (app note added 2/06) |
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Zero-Delay Bus Switches - Pericom Semiconductor App Note # 001.....[App
Note] |
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