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Display Electronic Circuits or Electronic Schematics
Display Circuits:  #'s - C       D - I       J - N       O - T       U - Z

Last Updated:  11/29/2017 05:38:40 AM

Circuits Designed by Dave Johnson, P.E. :
  • Power Supply for Digital Panel Meters that is Isolated  -  Many inexpensive digital panel meters, such as the one shown below, are designed to operate from a 9v battery. However, the nature of the panel meter internal design often requires that the DC supply used to power the device be isolated from the ground . . . [Hobby Circuit designed by Dave Johnson P.E.,  09/13/08]
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
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OLED Driver: 7V AT 350mA,-7V AT 250mA  -  The dual boost/inverting LT3471 provides positive (7V AT 350mA) and negative (-7V AT 250mA) bias voltages for an OLED display from a single cell Li-Ion. . .  [Linear Technology App Note - , Mar 24th 2010]

 

One Hz-2.5 GHz with Blue 2x16 LCD display  -  This is a top quality project designed to obtain maximum performance. The hardware and software has been pushed to reach the frontier of technology. The transcendent is not only a frequency counter, it is a corner stone in your successfully constructions. . . .  [can't find owner's name on website]

 

Parallel White LED Driver  -  Application Note LM3595 August 2003. . .  [National Semiconductor]

PC Based 7 Segment Rolling Display  -  It is very interesting and convenient to be able to control everything while sitting at your PC terminal. Here, a simple hardware circuit and software is used to interface a 7-segment based rolling display. The printer port of a PC provides a set of points with some acting as input lines and some others as output lines. Some lines are open collector type which can be used as input lines. The circuit given here can be used for interfacing with any type of PC’s printer port. . .  [Designer's name not given]

 

PC-Driven LED Display  -  Here is a circuit to generate sequentially running light effects using a simple program written in C. The output of the program is taken from the LPT port of a PC and then fed to the interfacing circuit for the LED display. The outputs of the interfacing circuit are decoded, inverted, and then connected to LEDs through optocouplers. . . .  [© EFY Enterprises Pvt. Ltd. All rights reserved.]

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PIC 5x7 Display  -  . . .  [Prepared by Colin Mitchell]

 

Picxie 2 8x8 Animated LED Signboard  -  The firmware supplied incurrent sourcecode archive is VERY BASIC. I do intend to draw more patterns. However, a vast workload coupled with possible emigration has put finished firmware on hold. Please do go ahead and build this circuit though supplied firmware is fully functional. You can have hours of fun designing your own patterns and effects!UsesPIC16F84. . . .  [Lewin A.R.W. Edwards]

 

Pin Diode Drivers  -  Application Note 02 Mar1999 /. . .  [National Semiconductor]

 

Pocket Ignignokt LED display  -  By now everyone's heard about the 2007 Boston Mooninite Scare. Unfortunately, as far as I know, no one has put any thought into mass producing more of these guys. Well, no more. Thom, a now-buddy of mine from Chicago, emailed me after he saw my Superbowl party window decoration to tell me that he thought it would be awesome to design a Mooninite PCB that could be built cheaply enough to be used as a throwie. So here it is. . . .  [© 2007 by Riad S. Wah[by]

 

Potentiometers Enable Programmable Biquadratic Filter  -  07/22/04 EDN Design Idea   Of the many types of analog filters available to designers, few allow easy adjustments of the filter parameters. The biquadratic, or biquad, filter is an exception, however. You can change that filter's corner frequency (ω0) , Q, and gain (H) by adjusting the values of three resistors. For that purpose, the lowpass biquad circuit of Figure 1 includes three digital potentiometers configured as variable resistors in the feedback loops. Altering the settings of these potentiometers changes the filter characteristics. . .  [by Deborah Mancuso and Donald Schelle, Maxim Integrated Products, Sunnyvale, CA]

 

Power Supply for Digital Panel Meters that is Isolated  -  Many inexpensive digital panel meters, such as the one shown below, are designed to operate from a 9v battery. However, the nature of the panel meter internal design often requires that the DC supply used to power the device be isolated from the ground . . . [Hobby Circuit designed by Dave Johnson P.E.,  09/13/08]

 

Power-supply IC drives multiple LEDs  -  09/02/04  EDN Design Idea   Bright LEDs are becoming prominent sources of light. They often have better efficiency and reliability than do conventional light sources. Although LEDs can operate from an energy source as simple as a battery and a resistor,. . .  [by John Lo Giudice and Vee Shing Wong, STMicroelectronics, Schaumburg, IL]

 

Programming Fun Lights With TI's TCA6507  -  Texas Instruments provides a broad portfolio of high-performance products for your LED design needs. From RF and power management (including AC/DC, Power Factor Correction, DC/DC and linear power conversion) to DSPs and ultra-low-power MCUs, TI has products to differentiate your design. And, TI's local support and applications expertise can help you get to market faster. . . .  [Texas Instruments App Notes, 30-Nov-07]

 

Provide High-Side Current-Sensing for White-LED Drivers  -  02/19/04  EDN Design Idea   White LEDs find wide use in backlighting color-LCD screens in most portable devices, such as cellular phones, PDAs, and MP3 players. Multiple LEDs often connect in series to ensure that the same current flows through every LED. To . . .  [by Dimitry Goder, Sipex Corp, San Jose, CA]

 

Quad Output Switching Converter Provides Power for Large TFT LCD Panels  -  DN349 Design Notes (Linear Technology) . . .  [Linear Technology]

 

Quad Output TFT-LCD Power Supply: 12.2V AT 500mA, 3.3V AT 2A, 35V AT 30mA,-5.5V AT 50mA  -  The LT1943 integrates 4 high efficiency switching regulators to provide 4 high power outputs for biasing TFT-LCD displays: 12. 2V AT 500mA, 3.3V AT 2A, 35V AT 30mA, -5. 5V AT 50mA. . .  [Linear Technology App Note - , Mar 24th 2010]

 

Radiated Emissions & CRT Displays  -  Application Note. . .  [National Semiconductor]

 

Read isolated digital signals without power drain  -  11/25/04  EDN Design Idea   Although optocouplers offer designers a straightforward method of establishing galvanic isolation between circuits that operate at different ground potentials, they do not provide an ideal approach. An optocoupler draws power from . . .  [by Alfredo H Saab and Joseph Neubauer, Maxim Integrated Products Inc, Sunnyvale, CA]

 

Reconstruction Filter Selection for HDTV & VGA/Application/ ABR-42015  -  Fairchild App Note - . . .   

 

Remote Controlled Sign  -  A SHORT COURSE in three designs to learn how to use Nutchips from ground up. You will start making LED flashes. You will continue learning how to switch outputs with separate START and STOP buttons. In the last instalment, you will learn how to remotely switch a light on and off. . . .  [Projects & Ideas from Nutchip.com]

 

Remote display  -  On this page, I will introduce remote display with PIC16F873.The asynchronous communication function (USART) of PIC16F873 is used for this equipment. The information which is set with the control unit is displayed on the large-sized display installed in the about 10-m left place using the cable. The size of the displaying unit has 25-cm height, 40-cm width. It is not so large size. . .  [Seiichi Inoue's Web Site]

 

RGB to YPBPR Component-Video Conversion  -  Figure 15 shows a method of generating the standard definition YPBPR signals from an RGB source using a pair of LT6550 triple Amplifiers. It should be noted that to ensure Y includes a correct sync, correct syncs should be present at all three inputs or else added directly at the Y output gated 8. 5mA current sink or 350Ω. . .  [Linear Technology App Note - , Mar 25th 2010]

 

RGB Video Inverter  -  This circuit is useful for viewing photographic negatives on video. A single channel can be used for composite or monochrome video. The inverting Amplifier stages are only switched in during active video so the blanking, sync and color burst (if present) are not disturbed. To prevent video from swinging negative, a voltage. . .  [Linear Technology App Note - , Mar 25th 2010]

 

RS232c Line Driver IC Drives Power MOSFETs  -  10/24/96 EDN Design Idea   Easy to affect an interface between power MOSFETs and TTL circuits. . .  [by Santosh Shetty, NCRA, Pune University, Pune, India]

 

RSDS™ Flat Panel Display Design Guidelines Part 1  -  Application Note. . .  [National Semiconductor]

 

RSDS™ Flat Panel Display Design Guidelines Part 2  -  Application Note. . .  [National Semiconductor]

 

Running Message Display  -  This is a circuit that can display a running message on a LED arrangement by using a Johnson decade counter. . . .  [© EFY Enterprises Pvt. Ltd. All rights reserved.]

 

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