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+/-5V Power Supply Operation with TC7106A/7107A TC7106A/7107A - Microchip
Application Note Published 12-Nov-02 (app note added 2/06) |
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µC Acts as Dedicated Motor Control - 09/11/98 EDN-Design Ideas / (added
2/06) |
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µC Based Circuit Performs Frequency Multiplication - 05/27/99 EDN-Design Ideas /
(added 2/06) |
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µC Controls Charge Pump as Background Task - 08/01/97 EDN-Design Ideas / (added
08/05) Because of power consumption and cost, designers of battery-powered devices
mainly choose components that run at 3V or lower. Unfortunately, many devices operate
only at 5V, including LCDs with built-in drivers, programming lines of many EEPROMs
and flash chips, and CMOS ADCs..... |
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µC Controls Digital Potentiometer - 10/08/98 EDN-Design Ideas / (added
11/05) Several circuits in article, scroll to f ind this one. Many digitally
controlled potentiometers (for example, the LM1971/2/3 from National Semiconductor,
www.national.com) incorporate a three-wire serial digital interface, using data,
clock, and enable lines. In Figure 1, the potentiometer's nomenclature for these lines
is Data-In... |
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µC detects transmission rate of RS-232 interface - 09/30/99 EDN-Design Ideas /
(added 2/06) |
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µC forms FM oscillator - 10/28/99 EDN-Design Ideas / (added 2/06) |
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µC generates a frequency burst - 02/03/00 EDN Design Ideas / (added
10/05) Pulse-sonar applications require generating bursts of a given
frequency, duration, and repetition rate. Traditionally, burst generator
comprises a crystal oscillator with pulse modulation. But easiest and cheapest
way to generate bursts is by using an inexpensive 8-bit µC, such as
68HC705KJ1 and 68HC7051A (Motorola) .... |
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µC generates musical sounds - 04/15/99 EDN-Design Ideas / (added 2/06) [Note:
File contains multiple circuits. Scroll to find this one] Many modern
devices send audible signals to ir operators to indicate some of predetermined
conditions or states of system under control. To avoid annoying.... |
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µC Implements Pushbutton Light Dimmers - 06/18/98 EDN-Design Ideas / (added 08/05)
A project required building a synchronous-demodulator circuit to track a line drawn on
paper. beauty of synchronous-modulator/demodulator approach is its
inherent noise rejection. method rejects nearly…. |
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µC makes inexpensive sine-wave generator - 12/17/98 EDN-Design Ideas /
(added 2/06) You can use A/D converters or external, controllable
oscillators to generate sine waves from low-power, low-cost µCs. However, se methods
add cost, reduce reliability, increase circuit and software complexity,.... |
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µC measures High-frequency signals - 03/02/98 EDN-Design Ideas / (added
2/06) |
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µC provides analog data to PLC chip - (07/03/97 EDN-Design Ideas / (added 2/06)
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µC Provides Wireless Keypad Control - 10/08/98 EDN-Design Ideas / (added 08/08/08)
Scroll to finde specific article. Portable systems, such as telephone handsets,
make extensive use of low-dropout (LDO) regulators. se components provide
noise-sensitive parts with a stable power-supply line..... |
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µC RePrograms Audio DAC via Serial Interface - 01/(07/99 EDN-Design Ideas / (added
08/05) [Note: File contains multiple circuits scroll to find this circuit]
You can use a simple µC to continuously program an audio DAC so that it operates in a
20-bit resolution mode ( Figure 1 ). After power-on, PCM1710 delta-sigma DAC
(Burr-Brown Corp, www.burr-brown.com) operates in its default 16-bit resolution.... |
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µC routines clear up errors - 11/10/94 EDN Design Ideas / (added 2/06)
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µC squares input signal - 12/19/96 EDN-Design Ideas / (added 7/06) Converting a
random-width pulse to a signal with the same frequency but with a 50% duty cycle isn't
easy, especially when the specified frequency range is large….. |
