Op-Amp Application: Unity Gain Buffer

This circuit is an Unity Gain Buffer. This circuit has a highest input impedance of any OP-AMP circuit. This circuit has a less gain error that is equal to common mode rejection or the reciprocal of the amplifier open-loop gain. The multiplication of the open-loop gain and the differential input impedance parallel with common mode input impedance will result the […]

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Low-Cost AC Supply

Applying the filtered and rectified AC input to a high-input-voltage linear regulator is the simplest way to produce low current level from an AC source. However, it will causes the power dissipation in the regulator. The power dissipation can be reduced by using a switching regulator but it will increases the cost if we use a switching regulator. This circuit […]

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