Free electronic circuit design and schematic diagram
This is 10.7-MHz IF amplifier circuit. This circuit is used in many application such as cell phone base station receivers (final IF) and FM broadcast receivers. The ceramic filter that is used in this circuit are cheap and available in a variety of insertion losses and banwidths. This circuit uses a 230-kHz bandwidth filter SFELA10M7GA00-B0 and the gain stage. Here […]
Read moreThis is a video tutorial for Function generator. This video explains how to use function generator and how it works. The function generator is used to generate waveform. The waveform that is can be generated by function generator are sinewave, squarewave and trianglewave. Using the function generator we can adjust the frequency, amplitude and DC offset. The function generator can […]
Read moreThis is a video tutorial about operational amplifier and super microphone circuit. This video shows how an operational amplifier works and an example of amplifier circuit for microphone. The op amp has five important pins. they are output pin, non-inverting input pin, inverting input pin and negative and positive voltage supply input pin. The output voltage will come out from […]
Read moreThis is a video of LED’s & Integrated Circuits Tutorial. This video shows how to make flashing box. to build a flashing box we need some tools and accessories, such as circuit board kit, UB5 size jiffy box, solder, soldering iron, and 9 DC battery. Before constructing the flashing box, we must plan about position of the circuit and battery […]
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High precision analog front end (signal conditioner) presented here can be used for portable ECG equipment that requires single-supply operation. There are two kind of amplifiers on the circuit diagram, the instrumentation amplifier INA326 and the dual precision amplifier OPA2335. Both operate from a single 5V supply and apply autozeroing techniques. Autozeroing techniques will keep the initial offset and offset […]
Read moreThis is a video tutorial of AND/OR gate. This video explains how the AND gate and OR gate works. AND gate has two input and one output. the rule of AND gate is when both input are “1”, the output is 1(on). The OR gate also has two input and one output but its rule is different from AND gate. […]
Read moreThis is Operational an Amplifier (Op-Amp) Oscillator circuit. This circuit has some advantages, they are this circuit can be operated at low frequencies with relatively small capacitors, it has a completely-symmetrical output waveform along with a buffered output and it will always self start and cannot hang up because there is less dc positive feedback than negative feedback. Returning R2 […]
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