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Versatile Digital Speedometer uses Few Components - 05/12/05 EDN Design Ideas /
(added 11/05) Microcontroller, display, and sensor form digital speed readout. |
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Versatile Programmable Amplifiers using Digital Potentiometers with Nonvolatile Memory
- AN-579 Analog Devices Application Notes (app note added 6/06) |
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Very Basic Logic Circuits - (schematic / circuit design added 9/02) |
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VF Control of 3-Phase Induction Motors using PIC16f7x7 Microcontrollers -
Microchip Application Note Published 26-May-04 (app note added 2/06) |
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Video Intrusion - This device uses a PIC16F819 and an LM339 to detect motion on a
video signal. The incoming video is 'clamped' using one section of the LM339, the sync
tips are detected with another section, and a 3rd section can detect VBI or other
data.….(design added 08/08) |
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Video Processor - (electronic circuit added 7/03) |
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Visible Laser Driver Has Digitally Controlled Power Modulation - Maxim Application
Notes / 228 / Mar-10 (app note added 5/08) |
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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….(added
08/08/08) |
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Voice Scrambler (Randy Linscott) - 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 ….(added 05/02) |
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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 (added 09/05) |
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Voice Storage Chips Talk to Each Other - 10/05/98 EDN-Design Ideas / (added 02/05)
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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 / (added 5/02) / 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 .... |
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Voltage to Current Conversion Apex-AN13 - Apex App Note (added 08/08/08) |
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Voltmeter Monitors TTL Supplies - National Semiconductor Application Note (app
note added 6/06) |
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Volume Control (Aaron Cake) - based on DS1669 Digital Pot IC (added 03/03/03) |
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Volume Control has Log Taper - 04/11/02 EDN Design Ideas / (added 1/05) 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.... |
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Wide-Dynamic-Range A/D Converters Pave the Way for Wideband Digital Radio Receivers
- 11/07/96 EDN-Design Feature / (added 7/08) 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?—Brad Brannon,
Analog Devices Inc |
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Wireless Home Security Implementing Keeloq® and 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
30-Oct-02 (app note added 2/06) |
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Zero-Delay Bus Switches - Pericom Semiconductor App Note # 001 (app note added
02/05) |
