Instrumentation Amplifier with CMRR Calibration

Common mode rejection ratio (CMMR) is one parameter that specify the instrumentation performance. LM4250 is high performance op-amp which is characterized by very low power consumption. With special arrangement as shown in the following schematic diagram, the instrumentation amplifier circuit will be featured with calibration to maximize the CMMR performance.  

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AD532 Multiplier IC and Its Pin Configurations

The AD532 is the first pre-trimmed single chip monolithic multiplier/divider. This device guarantees a maximum multiplying error of +- 1% and a +-10 V output voltage without the need for any output op amp or external trimming resistors. It’s simplicity of use provides design engineers with an attractive alternative to modular multipliers because the AD532 is internally trimmed. The AD532 […]

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Strobed Supply Improves Strain Gauge Bridge Efficiency

The following schematic diagram shows a  method to reduce power consumption without sacrificing the bridge signal output level of a strain gauge.  Many situation will be applicable for this strain gauge bridge signal conditioning circuit, where continuous output is not a must. In the long time frame, this circuit will in idle state  for almost all the time, with only […]

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Sferic Signal Simulator

Sferic signal simulator is used to produce an impulse  signal which simulates the waveform of a sferic, a radio atmospheric signals produced by a lightning strike. In time domain, the waveform of a sferic signal is a single high amplitude spike. When this pulse is analyzed in frequency domain, it will show a wide band spectrum ranging from few kilohertz […]

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LF356 Wide Range Current-To-Voltage Converter

Current to voltage converter circuit can be made using a single resistor, it is very simple since any current will naturally develop a voltage when flow through a resistor. Using an active component,  a small developed voltage on a resistor can be accurately measured since we can amplify it to reach a convenient level to be measured. A schematic diagram […]

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Capacitor ESR Meter

This is schematic diagram of capacitor ESR meter circuit. ESR is equivalent series resistance, and this parameter is used to express the resistance value of any electronic component that basically is not a resistor. ESR is present on many non-resistor component, such as capacitor, inductor, or semiconductor. The circuit shown in this schematic diagram is used to measure equivalent series […]

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