Free electronic circuit design and schematic diagram
LVDT (linear voltage differential transformer) is widely used as linear position sensor. AD589 integrated circuit provides a complete signal conditioner circuit solution for LVDT. Here is the schematic diagram of the circuit: The design procedure to determine the components values is available in the the datasheet of AD598 from Analog Devices.
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The MAX932 monitoring an input voltage in two steps figure is shown below. The outputs are high when Vin is higher than the LOW and FAIL thresholds. The calculation of threshold are the same to those for the window-detector application [Source: MAXIM Application Note]
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A circuit to shift from bipolar +-5V inputs to TTL signals is shown on circuit diagram below. The comparator inputs is protected by 10Kohm resistors and this is do not affect the circuit operation. [Source: MAXIM Application Note]
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The MAX931 series has capability to produce high output source which is useful for driving LEDs. The circuit below shows an example of simple four-stage level detector. Vin=(R1R2)/R1 volts gives the full-scale threshold (all LEDs on). The other thresholds are at 1/4 full scale, 1/2 full scale, and 3/4 full scale. The current into the LEDs is limited by the […]
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This is a Window Detector circuit. This circuit is used to detect over-voltage or under-voltage. This circuit uses the MAX933 and additional components like resistors. The over-voltage threshold of this circuit is 5.5V and the under-voltage threshold is 4.5V if we use the component values shown. We can choose different threshold by changing the values of R3, R2 and R1. […]
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This is a Auto-Off Power Source circuit. This circuit is used to turn off the power source automatically. This circuit uses the MAX931 that has key features such as high current output, an internal reference, 2.5µA supply current, and hysteresis. This circuit requires only 3.5uA quiescent current to provide voltage of Vbatt -0.12V with 10mA load. Here is the circuit: […]
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The OPA2544 is a dual high-voltage/high-current operational amplifier. We can use it for driving a wide variety of high power loads. 2A output current is provided by this device and power supply range extends to +-35V. Two high performance FET op amps with high power output stages are integrated in OPA2544 on a single monolithic chip. The amplifier and load […]
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