Rectifier current

It - the firing angle 3-d hall wave controlled rectifier. (Current flow-unldirectlonal)... 

Figure 3.1 Upper panel schematic component ofthedelayed rectifier current) and /Kn...

Weerapura, M Nattel, S Chartier, D Caballero, R. and Herbert, T.E. (2002) A comparison of currents carried by HERG, with and without coexpression of MiRPl, and the native rapid delayed rectifier current. Is MiRPl the missing link The Journal of Physiology, 540 (Pt 1), 15-27. 

Liu, D.W. and Antzelevitch, C., Characteristics of the delayed rectifier current (IKr and IKs) in canine ventricular epicardial, midmyocardial, and endocardial myocytes. A weaker IKs contributes to the longer action potential of the M cell, Circ. Res., 76, 351-365, 1995. 

I have done a little testing at maybe 7 bar - till it started arcing in the rectifier. Current problem is specifying the adder diodes - direction, count, etc. I am using 1 KV 75 nS Trr - quick recovery diodes, costing. 09 each, in parallel with 1.5 M 1/2 W metal film 1% resistors. 

Other potassium channels also play important roles here. For example, Kv4.3/ KChIP complex conducts the transient outward current, Ito, responsible for the descending phase 1 of the cardiac action potential, whereas Kvl.5 is underlying the ultra rapid delayed rectifying current, IKur, responsible for descending phase 2. Finally, inward rectifier potassium channel (Kir2 family) is responsible for IKl current, which maintains the action potential close to or at the resting level (phase 4). 

Ibutilide prolongs action potential in isolated adult cardiac myocytes and increases both atrial and ventricular refractoriness in vivo. An additional action is blockade of outward potassium currents. Thus, ibutilide acts by blocking the rapid component of the delayed rectifier current (IKr) as well as by activation of a slow inward current carried predominantly by sodium. 

Consolidative reduction has been employed when the object is so badly corroded that it becomes extremely fragile and all surface details are just a mass of corrosion products. In this case, one must apply a low-current density over a prolonged period. In some instances, it is necessary to hold together the loose crusts during the electrolysis, which are then ultimately reduced in situ into a more coherent but porous metallic network. In the case of a completely mineralized silver lyre from the Royal Graves at Ur, partially-rectified current was used to reduce silver chloride [298]. 

Hetero junctions, forming a Schottky barrier like a metal-semiconductor junction, normally change the energy levels of conduction and valence bands. When the Fermi level of the semiconductor equilibrates with the energy level of the redox couple in the solution, the electric energy level at the surface is pinned and a depletion layer is formed. This is postulated since the rectified current can be observed at semiconductor plate electrodes. The bending of the band in the semiconductor at the surface can be described as a solution of the one-dimensional Poisson-Boltzmann equation... 

We note that the presence of a chemical species, if it affects the double layer, can cause an increase or decrease in the barrier height 4>b in the semiconductor depending on the interaction between the species and the C-S structure. Those species that cause the barrier to increase would enhance rectifying current-voltage behavior in the C-S structure those species that cause the barrier to decrease would enhance ohmic (lack of rectification) current-voltage behavior in the C-S structure. 

In addition to its action on an inward rectifying current, a second K+ conductance activated by 5HT1A receptors has been reported on prepositus hypoglossi neurons (64), where both /IR and /OR (an outwardly rectifying slowly activated K current) contribute to generating the current that underlies inhibitory postsynap-tic potentials (IPSPs). 

Williams JT, Colmers WF, Pan ZZ. Voltage- and Ligand-Activated inwardly rectifying currents in dorsal raphe neurons in vivo. J Neurosci 1988 8 3499-3506. 

Rectifier current-voltage (IV) plot. The reverse current before Zener breakdown is /rs, the (negative) reverse saturation current. The equation should be the Ebers-Moll equation, Eq. (9.6.1), / = /rs [exp (eV/kBT) -1], which does not work very well in the Zener breakdown region. 

The detector used to convert incident microwave power into an output voltage is often a crystal detector consisting of a fine metal whisker in point contact with a semiconductor. The contact resistance is greater in one direction than in the other, and the small contact capacitance means that the crystal acts as a fast rectifier which is sensitive to microwave radiation. Incident microwave power on the crystal causes a voltage drop so that a current flows. At very low incident microwave power levels the rectified current is proportional to the power and, since this is proportional to the square of the voltage drop across the crystal, the detector is known as a square-law detector. At higher incident powers the rectified current is proportional to the first power of the voltage and the detector is then a linear detector. 

Gintant GA (1996) Two components of delayed rectifier current in canine atrium and ventricle. Does Iks play a role in the reverse rate dependence of class III agents Circ Res 78 26-37... 

Wang Z, Fermini B, Nattel S (1994) Rapid and slow components of delayed rectifier current in human atrial myocytes. Cardiovasc Res 28 1540-1546... 

The delayed rectifying current in ventricular myocytes that participates in the repolarization of the membrane potential has two components, a rapid and a slow current, known as I and Iks, respectively. hERG is... 

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