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Driver
Circuits, Page 6a
Drivers: #'s
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Last Updated on:
Wednesday, November 29, 2017 05:38 AM |
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Circuits Designed by Dave Johnson, P.E. : |
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Voltage Latching Relay Driver
Using some small super capacitors, this circuit can latch and unlatch a mechanical
relay with 10 amp contacts, from a small 3 volt power source. By using a
latching relay, power can be controlled to a load with a tiny battery.
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N-CH AND P-CH TRANSISTORS FORM PUSH-PULL DRIVER
This circuit can produce high speed output signals with fast rise and full times.
The unique change pump action allows the voltage of the
upper P-ch device to range from millivolts to hundreds of volts.....
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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LED driver doubles as fault monitor - 5-Aug-04 Issue of EDN LEDs find wide
use as indicators and as light emitters in devices such as optocouplers. In some
applications, the LED or the emitter may be located remotely at some distance from the
main unit. Typical examples are dashboard-mounted automotive indicators and industrial
optosensors. In critical applications, you may require some means of monitoring the
integrity of the LED..... [Design Idea by Anthony Smith, Scitech, Biddenham, Berdfordshire,
England] |
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LED driver provides oscillator for microcontroller - 16-Sep-04 Issue of EDN
The major building blocks for a white-LED driver are an oscillator, a charge pump, and a
regulated current source. National Semiconductor (www.national.com ] produces a device
that contains all these building blocks in the highly integrated LM2791/2 IC. You usually
use white-LED drivers in tandem with cellular baseband controllers or
microcontrollers..... [Design Idea by Wallace Ly, National Semiconductor, Santa Clara, CA] |
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LED driver provides software controlled intensity - 30-Sep-04 Issue of EDN
Recent advances in operating efficiency have expanded the use of LEDs from one of mere
indicators to becoming driving forces in electronic lighting. Increased reliability and
ruggedness (versus other lighting technologies] gives the LED a bright future indeed.
Vendors in recent years have introduced many ICs for driving LEDs, but the problem of
driving serial chains of LEDs has received less at..... [Design Idea by Neda Shahi and
Bjorn Starmark, Maxim Integrated Products, Sunnyvale, CA] |
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LED driver provides software-controlled intensity - 09/30/04 EDN-Design
Ideas.....Recent advances in operating efficiency have expanded the use of LEDs from one
of mere indicators to becoming driving forces in electronic lighting. Increased
reliability and suggedness.....Page includes several designs. Scroll to find
this one..... [Design Idea by Neda Shahi and Bjorn Starmark, Maxim Integrated Products,
Sunnyvale, CA] |
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LED drivers minimize power dissipation - 1-Feb-07 Issue of EDN Reference
source and pullup resistor improve efficiency..... [Design Idea by Fons Janssen, Maxim
Integrated Products Inc, Bilthoven, Netherlands; Edited by Brad Thompson and Fran
Granville] |
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LED senses and displays ambient-light intensity - 9-Nov-06 Issue of EDN
LED doubles as photosensor and visual indicator of ambient-light intensity..... [Design
Idea by Dhananjay V Gadre and Sheetal Vashist, ECE Division, Netaji Subhas Institute of
Technology, New Delhi, India; Edited by Brad Thompson and Fran Granville] |
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Level Shifter Follows Negative Output - 11/23/94 EDN-Design
Ideas.....Transistors Q1 and Q2 in Fig 1, develop a feedback signal of the proper positive
polarity for regulator IC1 from the circuit's negative output. You can use this simple
technique to sense any negative-voltage output..... EDN is migrating links. This link is
not verified. Google the "title" EDN for new link. |
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Limiting Amplifier Makes Efficient A/D Converter Driver - 09/02/96 EDN-Design
Ideas..... Limiting amplifiers are useful for protecting circuitry that has a limited
input range. A classic example is an input buffer for an A/D converter. Many A/D
converters are susceptible to damage if the input significantly exceeds the specified
range. In addition..... EDN is migrating links. This link is not verified. Search
the "title" EDN for new link. |
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LIN 2.0 Compliant Driver using the PIC18XXXX Family MicroControllers - Microchip
Application Note Published 27-Oct-05.....[App Note] |
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Line Driver Economically Synthesizes Impedance - 01/06/94 Issue of EDN-Design
Ideas.....The line-driver circuit in Fig 1 uses a second op amp to synthesize the output
impedance. The conventional line-driver circuit employs a single op amp having a resistor
whose resistance is equal to the desired impedance in series with the op amp's.....
[Design Idea by Victor Koren, Orckit Communication Ltd, Ramat-Gan, Israel] |
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Line Driving & System Design - National Semiconductor Application Note
(app note added 2/06) |
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Linear-brightness controller for LEDs has 64 tapsLinear-brightness controller for LEDs has
64 taps - 15-Mar-07 Issue of EDN Digital potentiometer controls the
brightness of LEDs..... [Design Idea by Ahmad Ayar, Maxim Integrated Products, Sunnyvale,
CA; Edited by Brad Thompson and Charles H Small] |
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Line-powered driver lights up high-power LEDs - 8-Jun-06 Issue of EDN LED
array reduces power and maintenance expenses..... [Design Idea by Aaron Lager, Masterwork
Electronics, Rohnert Park, CA; Edited by Brad Thompson and Fran Granville] |
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LM3916N bar graph driver - Datasheet in pdf format, drives a 10 LED bar graph
with VU proportions (3db/step).....(app note added 7/06) |
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Low Power RS-232C Driver & Receiver in CMOS - National Semiconductor Application
Note 05 Oct1998 / (app note added 5/02) |
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Low Voltage Latching Relay Driver - Using some small super capacitors, this
circuit can latch and unlatch a mechanical relay with 10 amp contacts, from a small 3 volt
power source. By using a latching relay, power can be controlled to a load with a
tiny battery. (added 7/06) …. [Designed by David A. Johnson] |
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Low-Cost Converter Drives Fluorescent Tubes - 03/31/94 EDN-Design Ideas.....In
the last few months, several designers have published circuits for cold-cathode
fluorescent-tube (CCFT]power supplies, and a specialized power-supply IC is also now
available. However, a significant number of CCFT applications don't require the complexity
and expense of a dual-FET resonant..... EDN is migrating links. This link is not verified.
Google the "title" + EDN for new link. |
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LX1686 Backlight CCFL Direct Drive Design Reference AN-13 - Application Note 13
from Microsem.....[App Note] |
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LX1995 LED Driver: Camera Flash Application AN-30 - Application Note 30 from
Microsem.....[App Note] |
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