Free electronic circuit design and schematic diagram
The strength of a radiated signal from a transmitter is measured by this circuit. It is commonly used by model airplane builders to check whether their transmitter are really transmitting the radio signal. One can quickly determine whether the problem lies on the transmitter or the receiver module using this FS meter. The only active element in this circuit is […]
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This is Attenuator Pads circuit. This circuit can be used when testing wireless network links to help simulate real life signal loss. This circuit can handle DC – 18 GHz, 2 watts of power, and have built in SMA connectors. The attenuator pads can be combined to increase the overall attenuation. a long length of high-loss cable, such as RG-174 […]
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This is a Cable Reflection Tester circuit. This circuit can be used to check coax cable runs for shorts or even impedance mismatches. This circuit will send a pulse down the circuit, then the return signal can be checked on an oscilloscope. The distance can be determined by using this equation:distance = time x speed equations. Here is the schematic […]
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If you are traveling, you might need this device to charge your gadget along the way, since it is much cheaper to buy some standard AA batteries for backup than buying several rechargeable batteries of your gadget type. Below is a charger that more efficient than linear regulator like the “7805” while you are on the go. The most important […]
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A dual benefit for battery-powered portable devices is provided by Class D audio amplifier. The produce much less power dissipation than do their linear cousins and they enhance battery life. Those features make this device an ideal candidate for controlling speed and direction in small electric motors. The standard application circuit for a class D audio amplifier is shown on […]
Read moreThis is a video about remove solder using solder wick. This video shows step by step how to use a solder wick to remove solder. Put the solder wick to the solder are that want to be removed. Then heat it up. The solder wick will suck the solder like a sponge. Here is the video:
Read moreThis is how to solder a capacitor to a circuit board video tutorial. This video shows step by step how to solder a capacitor to a circuit board. The positive leg capacitor is longer one. Put the capacitor on the holes of the board and cut the lead of the component. After that, solder the capacitor using soldering iron. Here […]
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