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High Impedance Low Capacitance Buffer/Amplifier (2N446)

2015-01-04 05:58  
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These are circuits of high impedance low capacitance buffer and high impedance low capacitance? amplifier. First figure is a high impedance low capacitance buffer circuit, it uses the 2N446 JFET that features low input capacitance. The feedback buffer a wide-band unity gain amplifier is made from this 2N446 JFET. Here is the circuit :

High Impedance Low Capacitance Buffer Amplifier circuit schematic
The second figure is high impedance low capacitance? amplifier. This circuit provides high input impedance and stable. This circuit has wide-band gain that is used for general purpose video amplifier applications. The gain of the amplifier is equal to R2/R1.

This article describes the High Impedance Low Capacitance Buffer / Amplifier (2N446). The principle is very simple, very practical. The circuit components can help you understand better grasp this principle. For example, in this circuit, you can go to find and buy these components:2N446.

 


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