2 × Dual = 1 × Quad Schematic Circuit Diagram


This is a sort of sequel to the article ‘2 × single = 1 × dual’. In this case, two dual opamps are combined to make one new quad opamp. This allows many possible variations, and again it allows two completely different types of dual-opamps to be used. It is very easy to replace a[…]

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Voltage Reference for Battery Powered Circuits Schematic Circuit Diagram

The LM4050 from National Semiconductor is a high precision micropower shunt voltage reference in a sub-miniature, surface-mount, three pin, SOT-23 package. The unit operates in the industrial temperature range of –40°C to +85°C. The design eliminates the need for an external stabilizing capacitor and is at the same time stable when operated into any capacitive[…]

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Mains Powered Schematic Circuit Diagram

Many circuits can be powered directly from the mains with the aid of a series capacitor (C1). The disadvantage of this approach is that usually only one-half cycle of the mains waveform can be used to produce a DC voltage. An obvious solution is to use a bridge rectifier to perform full-wave rectification, which increases[…]

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2 × Dual = 1 × Quad Schematic Circuit Diagram

This is a sort of sequel to the article ‘2 × single = 1 × dual’. In this case, two dual opamps are combined to make one new quad opamp. This allows many possible variations, and again it allows two completely different types of dual-opamps to be used. It is very easy to replace a[…]

Read more
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