Thursday, June 7, 2018
A Basic Transistor Amplifier with self-bias
This circuit will amplify the input signal with self-bias or feedback which can prevent amplitude distortion. However, it has two small drawbacks. It is only partially effective and, therefore, is only used where moderate changes in ambient temperature are expected. It reduces amplification since the signal on the collector also affects the base voltage. This is because the collector and base signals for this particular amplifier configuration are 180 degrees out of phase (opposite in polarity) and the part of the collector signal that is fed back to the base cancels some of the input signal. This process of returning a part of the output back to its input is known as DEGENERATION or NEGATIVE FEEDBACK. Sometimes degeneration is desired to prevent amplitude distortion (an output signal that fails to follow the input exactly) and self-bias may be used for this purpose.
Power ON/OFF Control with Push button (Ref: TI Application Report)
This simple push-button circuit allows a system to turn on with a short button press and turn off when the button is held down. Essentiall...
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This EMI filter includes a common-mode filter and a differential-mode filter. Generally Differential mode filter filters noise less than 3...
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VGS (th) = 1.3 V (Threshold Voltage) Input = 0V ; VGS > VGS(th) ; FET = ON ; Output = 0V Input = 3.3V ; VGS < VGS(th) ; FET =...