Free electronic circuit design and schematic diagram
LT1206 has been naturally selected as the components for video application since it has suitable bandwidth and output derive capability. This high performance features is not only suitable for video application, but also make it definitely suitable for audio application. The schematic diagram shows the LT1206 combined with the LT1115 low distortion, very low noise audio buffer with a gain […]
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Introduction Interfacing humidity sensor can be difficult because of the sensor’s drive requirement and their wide dynamic range. We can customize the circuit to obtain reasonable accuracy within the chosen range by carefully selecting the devices that comprise the analog front end. Here we present a case study to design analog signal conditioner for Phys-Chem Scientific Corp.1 model EMD-200o humidity […]
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Hydrophone is similar with microphone, except that it is used in underwater environment. Off course a hydrophone can be used to pick up sound in air, but it will be less sensitive since it’s mechanical-acoustical properties is design to match the acoustical impedance of water. The schematic shows the circuit of a low noise hydrophone amplifier with DC-servo. One half […]
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The schematic diagram below show a complete barometric pressure signal conditioner that operates from a single 1.5V battery. We can get the best accuracy and stability if we use bonded strain gauge and capacitive-based transducer, but they are expensive. This design introduce a new type of semiconductor transducer that achieves 0.01″ Hg (inches of mercury) uncertainty over time and temperature. […]
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Precision accelerometers needs inverting mode amplifier since they are usually charge-output
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This dynamic compressor will give about 20dB compression, at very wide input signal range 100 mV to 10 V. Another advantage of this circuit is that this circuit doesn’t need any power supply, we call it self powered, or more accurately, signal-powered compressor. Here is the schematic diagram of the circuit: A part of the signal is rectified by D1 […]
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In designing small signal amplifier circuits, to achieve a specified amplifier gain we usually use opamp amplifier design to ease the setting of the gain. When the gain accuracy is not critical, we can use transistor feedback amplifier as the base of our amplifier design. Here is the schematic diagram of the transistor amplifier: Transistor Operation Without TR2, taking the […]
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