is thyristor a monostable or astable or bistable?
470831
A thyristor is a semiconductor made of 4 levels of semiconductor material.Monoestable one state biestable two state Astable has no stable state. So a tiristor is bistable
48905
There's a great article explaining thyristor operation and showing basic circuit diagrams here: http://www.ibiblio.org/obp/electricCircuits/Semi/SEMI_7.html\n\nThere was also a very good reference book called "SCR Manual Including Triacs and Other Thyristors" published by GE from the early 1960's into the late 1970's.  It's a highly prized source for many engineers, and you -may- be able to find one for sale, if you're lucky. (No, you can't have mine :-P )\n\nDo a Yahoo! search for "thyristor circuit diagram" and you'll get thousands of results. :)
656571
b) and c)\n\nthe transformer works in such a way that electric current flows through the secondary circuit only when the electric current in the primary circuit is changing.\n\nwhen you close the switch the electric current in the primary circuit suddenly rises from 0amp to some value\nwhich causes electric curent to flow through the secondary circuit\n\n.. b) is true\n\nwhen you open the switch the electric curent in the primary circuit changes from the maximum value to 0amps thus electric curent flows through the secondary.\n\n.. c) is true\n\nbut \n..a) is false\n\nsicne a battery is a dc source wich means that as long as the switch is closed it supplies a steady amount of electric current through the primary. thus ther will be no current through the secondary.
251631
No. The filament is a part of the cicuit and when it is burned out, the circuit is broken and no current is flowing.
195649
Yes. In the simplest version, a 2-pole generator, each rotation of the armature causes two reversals of the current in it. By reversing the connection between the armature and the output twice per revolution, the commutator maintains a unidirectional flow at the output. As the first answerer mentioned there can be more ripple in the output of a slipring-diode setup than that of a commutator. Although this would not be true in a 2-pole generator, most practical generators are multipole. When the armature has more poles, the commutator has more segments; when the stator has more poles the commutator will be contacting more brushes. Either way the ripple is reduced.
225095
How about this one?\n\n"This calculation module allows you to quickly calculate fault currents for a complete radial system. It can simultaneously handle a main distribution transformer, service lateral, second transformer, up to 40 main-feeders, with 8 main-feeders having 40 sub-feeders for a total of 360 nodal points. \n\nAccommodating both single-phase and three-phase circuits, the module will calculate from either infinite or known fault current values at either the transformer or the main-bus. \n\nThe module accommodates multiple conduit types, bus types, multiple conductors and motor contribution. The program is based on the popular LICE (point-to-point) calculation method. \n\nOur unique Help file (of which we are quite proud) includes complete practical guidance on Fault Calculations, and even includes a theoretical derivation of the LICE method. "\n\nhttp://www.edreference.com/fault.asp
120526
Critically damped and overdamped oscillators have no overshoot and no oscillation; therefore no resonance.
398926
In electronics and digital circuits, the flip-flop or bistable multivibrator is a pulsed digital circuit capable of serving as a one-bit memory. A flip-flop typically includes zero, one, or two input signals; a clock signal; and an output signal, though many commercial flip-flops additionally provide the complement of the output signal. \n\nSee the below link for additional details.
1182896
Voltage applied to the primary coil of a transfer causes an electrical current to begin to flow, and that causes a magnetic field to form.  As the voltage drops back to zero and reverses, the field collapses and then forms in the opposite direction.  This changing magnetic field induces a voltage in the secondary coil.  If that coil is connected to some load, the voltage causes current to flow.\n\nIf the ferromagnetic core which concentrates and contains the magnetic field is laminated, and there is some room for these laminations to move, they move in response to the changing magnetic field.  If there is no movable magnetic material in the field, you hear nothing.\n\nIt need not be harmonic.  It depends only on how the magnetic material is affected by the force applied to it by the magnetic field, and that field depends on the variation of the applied voltage with time.  It need not be the sinusoidal pattern at 50/60 Hz of commercial power mains.  In a switching power supply, it's a square wave.
379234
Hi! A transformer works on the principle of mutual induction which is valid only when the voltage (or EMF, to be more appropriate) on one of the coils of the transformer is changing with time, as in the case of A.C. voltage. As the magnitude of the voltage changes on one of the coils, the corresponding flux on the other coil also changes, thus giving rise to a voltage on the other side.\n\nAn AA battery provides a constant voltage, as a result of which there is no change in flux and no voltage on the other coil (120 V side, in this case).\n\nHowever, there will be a flux change for a very short duration of time as the current in the 24 V side rises from 0 to its full value after the battery has been connected. During this time, a voltage will be induced in the 120 V side and you'll get an A.C voltage on this side. But this would be for a very short time duration.\n\nSo, the answer: After some time, there is no voltage (A.C. or D.C.) on the 120 V side.
398806
here is one of the datasheets available on the internet:\nhttp://www.ee.washington.edu/stores/DataSheets/74ls/74ls73.pdf
1177002
yeah you can use a switch (voltage switch) or if you can use binary logic, need to know how much voltage/current you are dealing with
1121007
yes. electricity flows one direction,comes to a stop, then flows in the  other direction. the alternator pushes the electrons in one direction for 1/120 of a sec.then the other direction for the same amt. of time.( for 60 cycle current ) one direction is the pos.1/2 cycle the other is the neg. 1/2 cycle.  the zero crossing point is the instant between one direction and the next, when current flow is stopped.
980113
Do you want to know if it is a negative or positive feedback control mechanism?  If so, it is a negative feedback control mechanism.\n\nNot sure if that is what you are looking for.
42116
Switching noise in synchronous digital circuits is directly related to both voltage and clock frequency.
437532
Possibly Rectangular Series Transformer (RST).  See Page 7 of the link.
246250
A bistable multivibrator is a fancy word for a flip flop.\n\nSo there are several answers possible here. The easiest is to make the 4 transistors into two 2-input NOR or NAND gates and cross couple them (see below). Of course, that assumes by transistor you mean bipolar and not FET, but the ideas are the same either way.