4-20mA Current Loop Bridge Sensor Transmitter

Bridged resistive sensing elements is common in resistive type sensors/transducers. This sensor type need a biasing voltage to operate. LM10 provide low reference voltage, which is suitable for powering usually low resistance bridge type sensors such as strain gauges. The reference voltage is not only supply the power to the bridge but also provide offset to set the output at […]

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Logarithmic Light (Photodiode) Sensor Signal Conditioner

There are many measurement system that would be more suitable if we use logarithmic scale, especially when we try to mimics human sensory response. Most physical phenomenon that sensible to human’s biological sensor system is wide range in nature. Human perception system is gifted with right method to scale very wide measurement range: logarithmic. We perceive unit based on significance […]

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Basic Audio Mixer Using Op-Amp

Audio mixer is used to mix several audio signal from many channel into one channel, in analog form. The basic requirement of an audio mixer is that the mixed signal is a product of simple addition. When connected to several source, each source should not interfere each other on each input line. If each sources has various DC offset level, […]

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