Research website of Vyacheslav Gorchilin
2020-02-04
NMR and short pulses
Some of the results of this experiment can hardly be explained by modern physics, because classical ideas on powered through the diode, the circuit can not be higher voltage than the supply voltage. The experiment is a continuation of a series of experiments on nuclear magnetic resonance (NMR) in the inductor and can be repeated in any home laboratory. Its scheme is shown in figure (1) and includes: generator of short pulses GG1, smoothing capacitors C1 and C2, an isolation diode VD1, two voltmeter DC voltage V1 and V1, the power source U1, and, depending on the variant, THV1 pulse transformer or resonant circuit L1C3.
 Fig.1. The scheme of experiment with two types of loads.
The operation of the circuit is to periodically connect the load to the inductor (transformer THV1 or the coil L1) key from GG1 to the supply voltage U1. In this case we measure two voltages: the first voltage, which is measured by voltmeter V1, and strore — voltage after the decoupling diode VD1, which is measured by the voltmeter V2. It should be noted that V2 is shunted by two condensers C1 and C2, which are completely smooth all the possible emissions from the operation of the key and its load. At first glance there is nothing unusual: the voltage V2 to just below V1, exactly as much as the passport is the voltage drop across the diode VD1 (depending on the diode it may be 0.4-0.8 In). But if you follow some conditions, the voltage V2 is more than V1, and this excess may reach a value of 1.6 times!
Conditions exceeding the voltage V2 over V1
The main condition that the voltage V2 is more than V1, is sufficiently short pulse in the load, with a rather steep front, and recession. It can provide this generator (GG1 scheme), and the optimal location of the contacts SA1 and SA2 in it, found by the author is "1111" and "0001" respectively. The optimal clock frequency may be in the range of 7-10 kHz. Thus, the potentiometer R1 should be withdrawn to its outermost position, providing the minimum resistance, and the switch SW1 is open. All this allows to obtain the minimum pulse width and the optimal ratio between their packs.
The author observed that the pulses longer than 100 NS in this experiment is a very important element GG1 is the output key. From the values of its output capacity, front rise and fall will depend on the parameters of the excess. The best solution from a known author, is the transistor TF27S60 (AOTF27S60); with it, the excess voltage can reach values of 60%. Works worse IRF3205 in which this parameter was 20%. Even weaker results were in IRF840 — 10% or less. The resulting effect is so sensitive to output capacitance key generator GG1 that the accession of a standard oscilloscope probe to its drain can be reduced by 20% or more.
Some additional conditions will be described below.