10 to 1000 MHz Oscillator Schematic Circuit Diagram

Nowadays, it is no longer necessary to use discrete components to build oscillators. Instead, many manufacturers provide ready-made voltage-controlled oscillator (VCO) ICs that need only a few frequency-determining external components. One example is the RF Micro Devices RF2506. This IC operates with a supply voltage between 2.7 and 3.6 V (3.3 V nominal) and provides[…]

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ECG amplifier circuit using ic 741 Schematic Circuit Diagram

Instrumentation amplifier using an opamp An instrumentation amplifier is a kind of differential amplifier with additional input buffer stages. The addition of input buffer stages makes it easy to match (impedance matching) the amplifier with the preceding stage. Instrumentation is commonly used in industrial test and measurement application. The instrumentation amplifier also has some useful[…]

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Variable differential amplifier

In a traditional differential amplifier with feedback to the -ye (inverting) input of an operational amplifier and a potential divider at the +ve (non-inverting) input. it is tricky to make the amplification variable. This is because the feedback network and the potential divider need to be each other’s image to ensure satisfactory suppression of the[…]

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