delabs Circuits

Wednesday, June 14, 2017

Active Camera trigger shutter

well listen i read about an idea but i didn't get it so well and i want to develop it if i understood it with ur help active camera trigger shutter something like that i want to know input output solutions and i was wondering if i can send the picture to a mail and how

mail from MK


Is this what you are looking for....

The HSP DIY system must therefore be a control system. Suitable control systems range from amazingly simple to extraordinarily complex. The tips on the following sections are designed to help you select the type of control system you wish to build and us

Active Camera trigger shutter

Photoflash circuit from pocket camera - This schematic was traced from an electronic flash unit removed from an inexpensive pocket camera, a Keystone model XR308.  Errors in transcription  are possible.

Flash slaves are used when you need to supplement one flash unit with one or several more. This slave trigger simply triggers those other units.

Slave Flash Trigger - A Programmable Optical Slave Flash Trigger  for Digital Cameras with Processor PIC 12F675

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Monday, June 12, 2017

RF Microwave and Wireless Projects

hi im a communications engineering student can u help me to find an idea for my secondary project. i want a hardware project that is related to for example wireless communications , microwave or fiber optics something like that can u help.

mail from MK


Think of the project you want, enter multiple keywords, then see the results. you may need download pdf files by right click save target ,

Cambridge Wireless Resources
"development and application of wireless and mobile technologies to solve business problems."

RF Microwave Projects

Look at these links too....

 Application Notes - RF Cafe -  Useful Learning Application notes on RF and Parts vendor sites.

New Wave Instruments - RF snd Microwave resources

A comprehensive collection of RF & microwave resources for wireless communication engineers. Includes tutorials, theory, design aids, circuit diagrams, products, and more.

First try out above links and google scholar, Then give me more specific ideas, so i can help you better.

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Wednesday, June 07, 2017

Application for 8051 mcu project

Need an unique Application for 8051 mcu project ? - mail by J9


Look at this place

8052.com - The Online 8052 Resource - This web site is dedicated exclusively to the 8052 microcontroller, related products (both hardware and software), and 8052 derivative chips. This includes the traditional 8052, 8051, 8032, and 8031....

The best place is PJRC: 8051 Projects - This 8051 development board provides an easy and low-cost way to develop projects based on the 8051 microcontroller, without the need to purchase any other equipment, such as EPROM programmers or emulators.

8051SBC

8051SBC V1.0 - The old day chips, say 8031, 8751, 8032 or the new chips,89C51, 89C52, 89C51RD2 can be used without any problem. Some may think that your old chips were useless, now you can use it for many projects.

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This is an answer of mine to an old post - 2006

Friday, April 21, 2017

How does RTD Work

How Resistance temperature detector works?

Post by JG

The most popular RTD is PT-100, Platinum 100 Ohms, As all Metals have a Temperature Coefficient of Resistance. The Resistance of RTD increases with rise in temperature.

How does RTD Work

Even Copper wire can be used, but you need to have a very thin and long wire to make usable measurements.

Resistance: Temperature Coefficient - Since the electrical resistance of a conductor such as a copper wire is dependent upon collisional proccesses within the wire, the resistance could be expected to increase with temperature since there will be more collisions

Resistance thermometer - Wikipedia - . The RTD wire is a pure material, typically platinum, nickel, or copper. The material has an accurate resistance/temperature relationship which is used to provide an indication of temperature. As RTD elements are fragile, they are often housed in protective probes.

What are RTDs? - in the case of Platinum known variously as PRTs and PRT100s, are the most popular RTD type, nearly linear over a wide range of temperatures

What is a Resistance Temperature Detector (RTD)? - Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core.
The material has a predictable change in resistance as the temperature changes; it is this predictable change that is used to determine temperature.

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This is an answer of mine to an old post - 2006

Thursday, April 20, 2017

Spice Simulation for CD4060

I found your web site today. I am looking for the CD4060 spice model for Orcad Capture. My Orcad version is the 9.2 (complete but without CD4060 !!)

I saw on your web pages a design using this component. How can I have the CD4060 model (to use it in simulation) ?

Mail from EG France

Try using 74HCT4060 or maybe 74HC4060

74HCT4060 or  74HC4060

Have a look at these links.

SPICE Simulation Fundamentals - Basic SPICE Simulation Model Parameters, SPICE Simulation Control Statements. SPICE Simulation Source Type and Parameters.

PSPICE Resources -  Where can I get my own copy of PSPICE using Schematics? (the student version 9.1 is free)

SPICE Resources - SPICE is available in many different "flavors." Several versions are presented below for your downloading pleasure.

SPICE - A Brief Overview - The description is far from complete, as SPICE is a powerful circuit simulator with many capabilitie

The SPICE circuit simulator and models - SPICE is an acronym for Simulation Program with Integrated Circuit Emphasis and was inspired by the need to accurately model devices used in integrated circuit design. It has now become the standard computer program for electrical and electronic simulation.

"The Orcad demonstration package includes several libraries for circuit layout, but only the EVAL.LIB has SPICE models as well. This library includes a range ...."

Please study all links above and tell me if it solves your problem, Look and study each link above. If you have a problem still, then i will search again or find a solution

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Tuesday, April 04, 2017

Bioamp for muscle signals - EMG

message: I'm working an a bioamp for muscle signals. This is the base design, but it does not work. Basically what I want to do is a circuit that amplifies my muscle signals and is able to run a small dc motor when I flex a muscle. Any help? Thanks

Mail from JX US


Electromyography (EMG)  - An electromyograph detects the electric potential generated by muscle cells. when these cells are electrically or neurologically activated.

Electromyography EMG

Study these links and send me a feedback ....

Positive Feedback Circuit for Isometric Muscle Experiments - he part of which I am most proud is the innovative Automatic Gain Control (AGC) circuit, without which the project would not have succeeded. This AGC circuit could well be used in many other applications too

EMG design parameters - The device must be able to detect the small signals arising from muscular contraction and amplify them without also amplifying ambient noise which may exist in the recording environment and which is likely to be of approximately the same magnitude as the signals of interest.

Important Factors in Surface EMG Measurement - Small electrical currents are generated by muscle fibres prior to the production of muscle force. These currents are generated by the exchange of ions across muscle fibre membranes, a part of the signaling process for the muscle fibres to contract. The signal called the electromyogram (EMG) can be measured by applying conductive elements or
electrodes to the skin surface, or invasively within the muscle

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Sunday, March 19, 2017

Coffee maker PID Temperature Control

My name is RP  i'm working on a project to regulated the temperature of a coffee maker. I don''t know were to start. what i want is to regulate the temperature of the coffee. Could you please help me.

Mail from RP


This is what you may have to do. study below pages and try.

Murph's Silvia PID Page - This page describes my effort to improve temperature control in a home espresso machine by installing a PID temperature controller. If you are reading this page, then you probably already know what Silvia is, what PID means and why anyone would want to add one to the other.

Coffee maker PID Temperature Control

Tuning a PID (Three-Mode) Controller - . If the controller does not include an autotune algorithm or the autotune algorithm does not provide adequate control for the particular application, the unit must then be tuned using a trial and error method.

PID controller - Wikipedia - A PID controller continuously calculates an error value {\displaystyle e(t)} e(t) as the difference between a desired setpoint and a measured process variable and applies a correction based on proportional, integral, and derivative terms.

Temperature Control - PID and LabVIEW - First, let's take a look at how the PID controller works in a closed-loop system using the schematic shown above. The variable (e) represents the tracking error, the difference between the desired input value (R) and the actual output (T). This error signal (e) is sent to the PID controller.

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