Research on portable constant pulse current source device

A Novel Portable Scissors-Type Fruit Picking Device

At present, the fruit picking in most countries still largely relies on manual operation. Manual fruit picking can protect the fruits from damage during the operation process. However, it is time-consuming and labor-intensive, and poses a potential safety risk to the workers while working at heights not reachable. Therefore, a variety of fruit picking machines and platforms have been developed ...

Development of a Robust Constant Current Source For a Current Source Inverter

Current Source Inverter(CSI) has applications in the area of current protection. For CSI fed loads, when connected at a point of common coupling (PCC), the system voltage, may not always be a pure sinusoidal waveform, due to distortions created by other loads at the PCC. This paper presents two simple controllers, namely the comparator type and PI type, to derive and generate a constant current...

Portable Electroencephalogram Biofeedback Device

A Grounded Constant Current Source with Improved Bandwidth

A grounded constant current source employing a single oper-j; >; -2y, = &g i (2kk+ 1). (A9 ationd amplifier is discus&. It is shown that improved bandwidth and k k I reduced slew rate limitations are obtained with this: circuit. Similarly the second product can be shown to be given by I: INTR~DUCDON fi xj’ 1 2k+l ( > N!(N+ l)! Circuit 1 of Fig. 1 is a commonly used single OP AMP j=k+ 1 X,‘-Xk’ ...

Pulse Width Modulation for Current Source Converters – A Detailed Concept

Abstract – The current source converter represents the dual counter part to the better known and more frequently used voltage source converter. As such due to duality rules many offthe-shelf solutions concerning the VSC can be used in a modified manner to handle the CSC. This work gives a comprehensive overview of CSC PWM methods and shows how they are to be distinguished. Then based on duality...