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This paper proposes a realization of fully tunable all-pass (AP) filter and its application. Three Multiple Outputs Operational Transconductance Amplifiers (MOOTAs) and a grounded capacitor are used for realizing an all-pass filter which is able to tune in both of the frequency response and gain. The frequency response and gain are independently tuned through particular bias current. The advantage...
Considering that the lifespan of electrolytic capacitors in power supply don't match that of LED, we propose a Buck converter which uses active ripple compensation circuit to replace the traditional electrolytic capacitor filter. When the converter works on long duty ratio, the power loss in compensation circuit is small and ripple current and voltage are low. The operation principle of this new topology...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
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