This simple circuit and program listing allows the Maximite microcomputer (SILICON CHIP, March-May 2011) to control a stepper motor. It could be expanded to allow for the control of multiple motors, with four of the Maximite’s external I/O...
Almost all 24V power systems in trucks, 4WDs, RVs, boats, etc, employ two series-connected 12V lead-acid batteries. The charging system can only maintain the sum of the individual battery voltages. If one battery is failing, this circuit...
Anyone experimenting or developing USB ported peripheral hardware soon be comes irritated by the need to disconnect and connect the plug in order to reestablish communication with the PC. This process is necessary for example each...
Generally, solar panels are stationary and do not follow the movement of the sun. Here is a solar tracker system that tracks the sun’s movement across the sky and tries to maintain the solar panel perpendicular to the sun’s rays, ensuring...
This circuit despatched out an alarm when its LDR sensor is uncovered to mild with the aid of solar or lamp. A 555 astable multivibrator was once used here which despatched sign a tone of about 1kHz upon detecting mild.The sensor when exposed...
The writer needed an extraordinarily low cost and simple alarm for some of hellos possessions, one of theses hellos electrically assisted bicycle. This alarm is in accordance with a low-cost window alarm, which has a time-switch delivered...
This circuit is designed to help minimise the quiescent power consumption of PCs and notebooks, the usage of simply our previous buddy the 555 timer and a relay as the major parts. The circuit itself dissipates...
Whether you’re speaking about a residence cinema or a computer system, it’s very frequently the case that the more than a few elements of the machine have to be fliped on or off in a relatively explicit order, or...
This is the simple circuit of automatic emergency light. It is called dark dependent circuit. A 555 timer
IC and LDR is used for this configuration. When light fall on the LDR,
its resistance is decrease and in dark position its resistance...
The circuit described right here can be used to ensure that a 12 V sealed lead acid (SLA) gel battery isn’t discharged too deeply. The predominant part of the circuit is a bistable...
Even robot systems occasionally need a negative supply voltage for some purpose or other, and in this kind of application in particular there is a need for an effective circuit that does not make greater demands then ...
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One type of metal detector is a type of beat frequency oscillator (BFO). The methods used in metal detectors in general are changing the characteristics of the oscillator when there are close to the metal sensor. The detector works based on...
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An electrically operated rolling shutter usually has a standard control panel with a three-position switch: up, down and stop. If you would like to automate the opening and closing with a time controlled switch, a few additional wires...
Automatic switch-on when it gets dark, 6V or 3V battery operationThis design was primarily intended to allow automatic switch-on of push-bike lights when it gets dark. Obviously, it can be used for any other purpose involving one or more lamps...
High headroom input circuitry, 9V Battery operationThis circuit is mainly intended to provide common home stereo amplifiers with a microphone input. The battery supply is a good compromise: in this manner the input circuit is free from mains...
This switch-mode power supply is built around a 555 timer IC. It provides a maximum output voltage of 40 V with a 12-V input voltage. The voltage can easily be set using a Zener diode, and it must be higher than the input voltage (the minimum...
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