TREE

Many digital code lock circuits have been published in this magazine. In those circuits a set of switches (conforming to code) are pressed one by one within the specified time to open the lock. In some other circuits, custom-built ICs are used and positive and negative logic pulses are keyed in sequence as per the code by two switches to open the lock. Circuit diagram : Simple Low-Cost Digital Code Lock Circuit Diagram A low-cost digital code lock circuit is presented in this article. Here the keying-in code is rather unique. Six switches are to be pressed to open the lock, but only two switches at a time. Thus a total of three sets of switches have to be pressed in a particular sequence. (Of these three sets, one set is repeated.) The salient features of this circuit are: 1. Use of 16 switches, which suggests that there is a microprocessor in-side. 2. Elimination of power amplifier transistor to energise the relay. 3. Low cost and small PCB size. An essential property of this...

This is Digital Rf Probe for Vom Circuit Diagram. This probe makes possible relative measurements of Rf voltages to 200 MHz on a 20,000 ohms-per-volt multimeter Rf voltage must not exceed the breakdown rating of the 1N4149—approximately 100 V. Digital Rf Probe for Vom Circuit Diagram

Who never used a multimeter Chinese yellowing that shoot the first resistor! Despite being heavily criticized, this multimeter is identical to any other, is a lightweight tool, compact, inexpensive and reliable. It has as main component IC 7106, which is an analog to digital converter, with output to liquid crystal display (LCD) 3 and 1/2 Digits.  The Marcelino (which may have other colors), has several brands and models, but his real name is 830, there are versions without the test transistors, there are also variants with signal generator 50Hz, thermometer, continuity test with back-light, etc. This multimeter can measure DC Volts 0.1 mV to 1000V, AC Volts 0.1V to 750V, Ampere DC 0.1 mA to 10A, Ohm 0.1 Ω to 2MΩ, diode and hFE for bipolar PNP transistors and NPN. Basic scheme of Digital Multimeter circuit diagram  

This is the Modem for Digital Modes Circuits Diagram. Ham Com is a modem for almost all types of digital transmission for radio amateurs. It can be used to RTTY, ASCII, NevTex, Sitor, Amtor, Fec, CW, FSK, etc.. The modem is simple and can even be used for receiving faxes and SSTV wx-using JV-FAX software.  Modem for Digital Modes Circuits Diagram To use this modem, you need a PC with serial port, Software HamCom and radio equipment.

2×160 W at 10% THD+N Into 8-Ω BTL  2×210 W at 10% THD+N Into 6-Ω BTL  1×300 W at 10% THD+N Into 4-Ω PBTL 2 x 210 Watt STEREO DIGITAL AMPLIFIER POWER STAGE

Digital Control System  is a branch of the control system with continuous time processes in the region associated with the digital controller as the controller of the control elements that control systems and computing discrete time. Depending on requirements, a digital controller can be shaped microcontroller and ASIC to a standard desktop computer. Because the digital computer system is discrete, then the Laplace transform is used in the control system is replaced with the Z-transform. Therefore, you must understand about the concept of continuous time and discrete time concept. Flow Chart - Digital Control system applications Digital computer also has a limited precision (See quantization) extra care needed to ensure that errors in the coefficients, A / D conversion, D / A conversion, etc. do not produce unwanted effects or planned. The application of digital control can easily be done when used in a feedback form. Since the creation of the first digital computer in the e...

This can be a complete project on its own - a simple DIY digital thermometer with 7-segment displays and only a handful of parts - the PIC16F88, LM35 and a small number of resistors and capacitors running off a regulated 5v supply. Temperature range - 0 to 150'C Display type - 3 digit multiplexed 7 segment or 3 individual 7 segments Controller: PIC16F88 Programming Language: BASIC Compiler: mikroBASIC PRO for PIC v3.20 Complete code: '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''...

This is a Simple Digital logic Pulser Circuit Diagram . The logic pulser generates pulses at 500 Hz or 0.5 Hz. When the pulser`s.tip connects to an input that is already being driven high or low, the pulser senses thelogic state and automatically pulses the input briefly to the opposite state.  Simple Digital Pulser Circuit Diagram

This is a Touch Switch with Digital Output Circuit Diagram control key by touch simple, it uses a 4011 IC. The output logic HI has its pulse delay time controlled by C1. In the case is C1 4.7uF controls the pulse width for 1 second, then the touched the plate. Nothing prevents you from being done tests with other values ​​of C1. Touch Switch with Digital Output Circuit Diagram

Digital Audio Processor TDA 7309 is a stereo audio processor with independent volume control of each channel was to get the audio quality of a good processor. Digital Audio Processor TDA 7309 is equipped with a loudness control is controlled externally. Digital Audio Processor TDA 7309 also has a soft mute feature stand-alone for each canals. Digital Audio Processor TDA 7309 is controlled via the I2C serial bus system with a microcontroller interface.  Click to view larger. Block Diagram of Digital Audio Processor TDA 7309Feature-owned Digital Audio Processor TDA 7309The input multiplexer with 3 stereo inputRecording function on the output lineLoudnes external ontrolIndependent volume controlDigital volume control with 1dB stepSoft MuteAll functions of the Digital Audio Processor TDA 7309 is programmed via the I2C serial bus system

Canon has long been a leader in the world of DSLRs, but when it comes to smaller sized shooters, Canon had largely concentrated on commercially viable consumer and prosumer class digital cameras, not really treading on the mirrorless camera technology known as Micro Four Thirds which has been around for some years now. The mirrorless camera comes close to a DSLR in terms of image quality, and yet is far less bulkier in terms of size, not to mention allowing you to change a fair number of lenses (a market which is growing), making it a favorite secondary camera to many. Well, Canon has finally decided to dip their toes into this particular market, by offering the Canon EOS M digital camera which is said to deliver exceptional EOS Full HD video quality with continuous autofocus, not to mention having it accompanied by a notable and expansive range of lenses. Inspired by EOS technology, the EOS M will be able to leverage on the company’s core technologies, while distilling them down in or...