about 3 weeks ago - 1 comment
The multimeter is a measurement device most used by engineers and we use it in this temperature measurement circuit schematic. The temperature sensor is LM335 wich has a linear characteristic of 10mV / K . In the production process this electronic device is calibrated so can provide 2.73V at 00C. LM336 is used as a More >
about 1 month ago - No comments
It is an ideal solution to protect rechargeable batteries from deep discharge. It gives an LED indication when the voltage level in the battery drops below 5.1 volt.
CA 3140 Op Amp is used as a comparator with a zener to fix voltage in its non inverting input. Preset VR1 set the voltage level just below More >
about 1 month ago - No comments
Is is easy to test the polarity of a circuit’s point whether it is positive or negative by using the tester circuit featured here. The tester circuit has a high input impedance (around 1 megaohms) to avoid loading the point being tested. In testing sensitive points however, (inputs of opamps), the input impedance must be More >
about 2 months ago - No comments
A high power audio amplifier circuit which can output up to 240W on a 4Ω speaker.
This mosfet amplifier is built with BUZ23 and uses a 40V symmetrical power supply. Connect the NTC close to the heatsinker.
MosFet 240W power amplifier schematic
about 3 months ago - 1 comment
One wideband fm power amplifier designed with MRF 171A MosFet transistor. The output rf power is somewhere around 40W , the gains is 20dB ( 100 X ) . The input rf power is 400mW.
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