Free electronic circuit design and schematic diagram
This circuit diagram shows us about simple SWR which is built using readily available parts. Take a note that to ensure accurate power reading, no attempt has been made . If we want a circuit that would fit in a small enclosure, and give an indication of minimum SWR, this circuit does the trick. The trick is based on the […]
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ESR is Equivalent Series Resistance. ESR is one of the characteristics that defines the performance of an electrolytic capacitor. It’s highly desirable to use Low ESR in capacitor as any ripple current through the capacitor causes the capacitor to heat up due to the resistive loses. By drying out the electrolyte at an ever increasing rate, the heating accelerates the […]
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This circuit presents a very simple and useful stereo balance indicator circuit that is based on few common external components. This schematic circuit is very simple to build. An visual indication with LEDs for left , right and center balance is provided by this circuit. Outputs from each channel are fed to the two inputs of IC1 connected as a […]
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The ESR (Equivalent Series Resistance) of an electrolytic capacitor is normally just a low voltage capacitor (such as a 1000uF, 16V cap), small fraction of an Ohm for a high capacitance, and can be as high as two or three Ohm for a low capacitance, high voltage cap (1uF,450V). This resistance increases when the capacitor ages, and it often does […]
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Resistor and LM317L act as a current regulator set to 40 ma. Current will flow from the battery through one pair of LEDs, and then to the regulator, through the other pair of LEDs and finally back to the battery. Noise on the power supply lines filtered out by the capacitor. To make the current through them is roughly equivalent, […]
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Below is reverse engineered circuit diagram of yet another commercially produced solar garden lamp. To turn the light on at night, this depends upon a CDS photocell. It allows the battery to charge more efficiently although more complex than the circuits. Read more original source: http://members.shaw.ca/novotill/SolarGardenLight/index.htm
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It is still possible to build circuits without IC’s and still achieve a high level of performance while integrated circuits have become a staple of all modern circuit designs. A high performance 5 volt voltage regulator built using discrete components that are readily available is shown on circuit diagram below. This circuit not need an IC and only need to […]
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