Free electronic circuit design and schematic diagram
This is a Servo System Controller circuit. This circuit is used to control a servo motor remotely. This circuit uses the 555 and requires only six extra components. Here is the circuit: [Source: Philips Semiconductors Application Note]
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This is a Long Time Delays using 555 Timer. In 555 Timer, a function of charging rate of the external capacitor is the timing. This circuit needs expensive capacitors with extremely low leakage. Practically, the components limit the time between pulse to around twenty minutes. To get longer time periods, we can connect both halves in tandem with a “divide-by” […]
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LVDT (Linear Voltage Differential Transformer) need a complex excitation circuit and signal conditioning to work. Fortunately, Analog Devices provide AD598 for complete solution of LVDT signal excitation and conditioner to ease your life. AD598 can be operated in single supply mode, great for battery-powered LVDT Application. Here is the schematic diagram of the circuit: The design procedur for determining the […]
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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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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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