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I need to design a circuit to switch on a warning lamp or sound a hooter when a door is opened and the reed switch is activated by the magnet. I have herewith attached the circuit diagram of the test setup. My problem is that the reed switch fails within a few (3 or 4) operations though the...
I have a Deckel FP-3A CNC Machine which recently developed a minor problem; all other functions are normal, but the X-axis motor keeps rotating slowly in one direction even when no instruction is given and the entire motor control unit gets tripped once I try to move along the X-axis in any...
Thank you Atripathi for explaining me the disadvantages of using a SCR for my circuit so nicely. Can you suggest me or recommend me to any particular MOSFET, as I have never used a MOSFET till now. I'm sorry for my ignorance. Is there any comparable circuit or useful link for easing out my task ?
I am in need of designing and constructing a switching / chopping circuit to switch a power supply of around 100V dc at the rate of about 250Hz and the Load is a purely Inductive load. The load is nothing but a buzzing coil to switch on and off reed switches at 250Hz frequency. The current...
Please help me friends !!!!!I need to make a ATmega circuit design to measure various parameters such as pH/Cond/TDS/ORP and Turbidity. All parameters are pre-converted into voltage through specialised transducer set-ups which give out 100 mV to 1100 mV as minimum and maximum readings. The...
Dear friends, I use Texas TL2575HV-12IKTTR to convert 21Vdc to 12Vdc and then feed this to a CCTV camera consuming about 550mA at 12Vdc. My problem is that the regulator gets overheated (above 100 degrees C) for this current well below the rated 1A. I used the application circuit prescribed in...
Hi Friends, can anyone help me build a simple and fast acting video switch that could be used to select one of four video inputs and output a single video with four split screens with the four video signals. I want to view all the four videos simultaneously on the four split screens. Kindly...
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