Industrial Timer Circuit

Engineeering Projects
industrial timer transmitter circuit

Humans are born of habits, they want more and more comfort. To match their requirements, various types of automatic control systems have been developed. Now, again here we have come up with a very interesting project called “Industrial Timer Circuit” with facilities like automation and switching, providing delay and having a long-range of control (100 m). A simple timer circuit can be designed using 555 timer IC by configuring it into monostable mode. These types of circuits have various types of limitations like digital display, an indication of system failure, remote…

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Arduino FM Receiver Circuit using TEA5767

Engineeering Projects
author prototype of fm receiver using arduino

The circuit posted here is of Arduino FM Receiver using digital radio—receiver module TEA5657 by Philips. Additional components like audio power amplifier, Arduino uno board, and LCD module to display station number and frequency. However, for the receiving system to function flawlessly, external components like a capacitor, resistor, etc are included in the circuit, which is necessary. if you wish to make your FM transmitter circuit using Arduino please go through this link: Arduino FM Transmitter Description Arduino FM Receiver Circuit using TEA5767 The circuit of the project Arduino FM…

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Pachisi Circuit Game using 555 IC

Engineeering Projects
pachisi electronics game circuit

Pachisi game is a game similar to backgammon played mostly in Indian subcontinent, in which cones and cowries shells are used instead of counter and Dice. The game is played on a board between two persons, with the pieces moved in accordance with the throws of the cones or cowrie shells. This is an interesting game to test the ‘frustration quotient’ of the players. The rectangular board includes a number of red and green circles. Opponents start from the same square and move in opposite directions. The player who reaches…

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Auto Cut for Manual Stabilisers using 741 IC

Engineeering Projects
auto cut system for manual stabiiser

Many circuits have been published about the auto-cut arrangement in manual stabilisers. These circuits generally use transistors with zener diodes as the only sensing device. However, these circuits have two main drawbacks. Spurious triggering of the transistor Fluctuation in zener diode Circuit Description of Auto cut for manual Stabilisers The circuit of auto cut for manual stabilisers described here overcomes spurious triggering of transistor and fluctuation in zener diode drawbacks. It uses the most versatile op-amp IC741 a schmitt trigger. The reference voltage is given by a combination of 4.6V,…

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Bipolar DAC Tutorials

Engineeering Projects
Binary weighted resistor based bipolar dac

Bipolar Digital to Analog Converter (DAC) Digital to Analog converter is an important part of many system. In this section, we have taught what bipolar digital to analog converter are and for better explanation we had also includes various circuit diagram. Normal (unipolar) digital to analog converter can only give output either of positive types or of negative types but bi-polar converter is used to achieve both positive and negative output. Figure 1 represent the transfer curve of bipolar digital to analog converter. Working of Bipolar Digital to Analog Converter…

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Dual Trace Generator Circuit

Engineeering Projects
dual trace generator using 555

A single beam CRO can be used for simultaneous display of two signals using this simple circuit “Dual Trace Generator Circuit”. The circuit uses one NE555 and two LM741 ICs, besides some passive components. The diode (1N4148) is used to get a 50 percent duty cycle. Circuit Description of Dual Trace Generator Circuit IC 555 is connected in astable mode and acts as a self-switching analog switch between the two signals to be displayed on the CRO. The output of IC 555 is given to the CRO. In order to…

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10-Channel Multiplexer Circuit using 555 IC

Engineeering Projects
multiplexer circuit for 10 channel

This project is a low-cost multiplexing system for ten channels. The project 10-channel multiplexer circuit using 555 IC can be used as an add-on device for a single point indicating system. Both auto and manual selection are incorporated with the visual indication of channel number. It is suitable for signals concerning a common line. However, for double-ended signals, the input LOW lines can be made common and the input High lines can be multiplexed. This can be used for thermocouple signals, strain gauges, and any other AC/DC signal in the…

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Alarm Circuit for Clocks

Engineeering Projects
alarm circuit configured for clock

Here is an alarm circuits for clocks using IC 5387, 5316, LM8361 etc. (any IC giving an alarm and a 1Hz outputs). This circuit has the following advantages over most of other alarm circuits (especially alarm circuits based on IC 555): Working Principle of Alarm Circuit for Clocks The quiescent current is only 0.1 mA which is much less than the 10-15 mA consumed by 555 circuits. Hence the life of 9V battery is increased by above three times. The operation current is also very small. IC 555 based circuitry consumes…

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Sound Level Meter Circuit

Engineeering Projects
sound meter circuit

The project sound level meter circuit shown here comprises a display circuit for 10-segment resolution i.e. used to indicate sound level up to 10 levels. Recording of sound in the studio involves critical adjustment of recording levels and level of bias current. If the level of sound is very much it may cause some distortion while a low level of sound reduces the SNR (Signal to Noise Ratio) as a result the sound may be too noisy. Care should be taken while recording sound to regulate the signal so that…

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Wireless Mobile Charger Circuit Diagram

Engineeering Projects
wireless power transfer receiver circuit

Wireless Mobile Charging is one of the trending topics in the field of electronics thus we also decided to build a Wireless Mobile Charger Circuit Diagram using various commonly available components. The project Wireless Mobile Charger Circuit Diagram posted here can deliver 271mA at 5.2V so you charge mobile phones and also can be used to drive low power loads such as LED1 and LED2 as shown in figure 2. Working Principle of Wireless Mobile Charger Circuit Diagram Wireless Mobile Charger uses the inductive coupling principle. In this principle, two…

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