Circuits

Circuits and Schematics, pdf, png.

The Incredible and Versatile 555

 Basic Electronics, Circuits  No Responses »
Aug 052008
 
The Incredible and Versatile 555

The Incredible and Versatile 555 : These are some 555 circuits, The most versatile and simple chip of all time !. Some 555 circuits with source in the Cadsoft Eagle format are also here for editing and learning. 555 Timer based Circuits The best part of the 555 is that it has an voltage detection. It has a Versatile Logic which is defined by voltage comparators. The ability to loop it like an opamp for feedback makes it the first “Programmable” Mixed Chip. In short it make an ideal building block. Its drive is amazing, it can power small solenoids, [Read More ....]

 Posted by delabs at 5:25 pm

LM3914 – Dot Bar Display Driver

 Circuits, Integrated Circuits  No Responses »
Jul 302008
 
LM3914 - Dot Bar Display Driver

The LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. A single pin changes the display from a moving dot to a bar graph. Current drive to the LEDs is regulated and programmable, eliminating the need for resistors. This feature is one that allows operation of the whole system from less than 3V. LM3914 – Versatile and Easy use Display Drives LEDs, LCDs or vacuum fluorescents Bar or dot display mode externally selectable by user Expandable to displays of 100 steps Internal voltage reference from 1.2V to 12V Operates [Read More ....]

 Posted by delabs at 3:20 pm

Electronic Shift Monitor

 Circuits, Projects  No Responses »
Jul 302008
 
Electronic Shift Monitor

The Security Guard duty monitor below, shown in eight circuits at Digital Circuits – 1 are examples of logic circuits, i have converted them from the DOS Orcad to Orcad 9 and corrected some errors a few years back. These circuits can be used for looking at the logic blocks or to learn. This product was built and sold to some firms many years back. Now these designs are best done with a PIC or Atmel chip. Here is the user manual Electronic Shift Monitor ESM9000

 Posted by delabs at 12:45 pm

Capilano Computing – DesignWorks Schematic Capture

 Circuits, Design  No Responses »
Jul 172008
 

Capilano Computing – DesignWorks Schematic Capture Free Schematic Archive All schematics in this archive should be readable using DesignWorks Professional, DesignWorks Lite or LogicWorks products on either Windows or Macintosh or Free DesignWorks Viewer (currently for Windows only). What is LogicWorks 5 LogicWorks is an interactive circuit design tool intended for teaching and learning digital logic. No other software tool makes digital design easier, faster or more interactive than LogicWorks. The package gives you the power, speed and flexibility to create and test an unlimited number of circuit elements on-screen.

 Posted by delabs at 1:50 pm

eCircuit Center – Spice Schematics

 Circuits, Software Tools  No Responses »
Jul 162008
 

eCircuit Center – Spice Schematics “The goal is a site where the learning of electronics is hands-on and fun. And the SPICE circuit simulator is a great software tool to achieve that goal. It hit me the first time I used SPICE – simulating is fun! And because it’s easy to use, I’ve spent a lot of time building and exploring circuits.” – Rick SPICE Basics SPICE Commands Circuit Collection Circuits – Programmable Gain Amplifier (PGA) Op Amp Single-Supply AC Inverting Amplifier Instrumentation Amp (3 Op Amp) Sensor Bridge with Current Bias The PID Controller Pulse Width Modulation Precision Half-Wave [Read More ....]

 Posted by delabs at 7:50 am

Analog Circuits – delabs Circuits

 Analog Design, Circuits  No Responses »
Jun 092008
 

Analog Circuits – delabs Circuits Analog Circuits added after 2004 Auto ranging 4-1/2 digit digital voltmeter icl7135 of intersil. Precision attenuator with digital control – use with above. Precision amplifier with digital control – use with above. Precision attenuator and amplifier – write up for above two. Fluid or water level sensor using reed relays Fluid or water level sensor using reed relays – circuit example. Analog Circuits Instrumentation Industrial Process Control Circuits Instrumentation Circuits Analog Circuits – 2004 Temperature Measurement Control Circuits in Above Voltage to pulse converter, for impulse counter Current Source mA for calibration AC voltmeter digital [Read More ....]

 Posted by delabs at 8:51 pm

Digital Circuits – delabs

 Circuits, Data Interface  No Responses »
Jun 082008
 

Digital Circuits – delabs These circuits are based on CD40xx Chips and other. You can use 74HCT or any other series that is available. use one family for a particular project. These were used nearly two decades ago. Use it for learning, glue logic or to interface your uC designs to external devices. Do not make only Logic based designs like some below. It would be better to use a uC, CPLD or FPGA if you are building a complex gadget.Basic Digital Circuits Digital Timers, Counters and Clocks Sequential Timer CD40xx Sequential Timer 7217 Six Digit preset counter CD4518 Analog [Read More ....]

 Posted by delabs at 3:15 pm  Tagged with:

Circuits Archive – ASCII circuit diagrams

 Basic Electronics, Circuits  No Responses »
Apr 212008
 

Circuits Archive – ASCII circuit diagrams The Multivibrator Circuit Guitar Effect Circuit Paradoxical sound synthesizer Microphone Pre-Amp Active Antenna Everything you ever wanted to know about LCDs List of Capacitor type qualities Collection of Design Notes

 Posted by delabs at 6:08 pm

PWM Control Circuit – TL494

 Circuits, Power Electronics  No Responses »
Jul 122007
 

PWM Control Circuit – TL494 Complete PWM Power-Control Circuitry Uncommitted Outputs for 200-mA Sink or Source Current Output Control Selects Single-Ended or Push-Pull Operation Internal Circuitry Prohibits Double Pulse at Either Output Variable Dead Time Provides Control Over Total Range Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance Circuit Architecture Allows Easy Synchronization The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494 contains two [Read More ....]

 Posted by delabs at 2:05 pm
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