High Voltage circuit 1KV- 4KV for an oscilloscope tube, the essentials (16 KC oscill coil) demo

Please read the description/textbox first. Be very careful when you work with these High Voltages, going from 60 V to 4000 Volts. The current, in this case, is very small, anyway, it can do harm.

Every voltage going higher than 60 Volts can be dangerous. Be aware of that, video not made for children.

In this video I show how to get to 500 DC volts (or higher, low currents by the way!) with the help of an oscillator on 16 KC. First relevant video is here https://youtu.be/2zqOVpT3Abk

By the way: this video (the next) is only a VLOG.

Though I also show a real time, working and tested 2 Darlington oscillator schematic with which you can get such a 16 KC analog ferrite HV television coil into proper self oscillation, giving out its maximum AC voltage.

That (HV secondary voltage) has to be rectified with a typical HV diode (more in the video).

Please note: the internal capacitance inside the tube (anode-ground-minus) can act as a smoothing capacitor for HV (c.q. the HV diode). That principle (smoothing 16 KC out by the tube's internal capacitance) was also used in old school analog TV sets with cathode ray tubes.

Please note that such high voltage is dangerous (!) and can be lethal, especially for youngsters/children and people with heart problems or having a pacemaker.

So this is a warning and a disclaimer. Don’t make this circuit in these cases, an electric shock is possible. Keep children away from this circuit. No video for children here.

The showed solution (16 KC HV coil, DC rectifying with a HV diode, tube or Silicon rectifier) is/was also used in the past (and is used now, 2022) to make High Static DC voltages in the order of 500 Volt to 30 Kilovolt.

To drive cathode ray tubes and other electronic circuits (e.g. medical or laboratory HV circuits) or other kinds of High Voltage applications.

Key is the 16 KC (16000 Hertz) oscillator, made with a ferrite transformer/core, in such a way that the transformer with its 2 coils on it (primary and secondary) give out an extremely high voltage, because it works on its “peak” oscillation/resonance on that 16 KC.

Many HV circuits for laboratory use (say electrostatic voltage supplies for e.g. electrophoresis chemical tests and DNA testing) work in fact by the same way, though their HV circuits (in modern times, now 2022) work via 110 V/230 V AC, with a HV specific controlled oscillator on (often) 30 KC or 60 KC or 100 KC.

That gives many more electronic properties, say: a lower HV current, not (too) much heat developed in the oscillator, easier “switch off” properties, very low safety risk when people get in contact (with the body) to the High Voltage source.

The Voltage drops in these modern circuits to a safe value immediately, an electronic safety switch (=current limiter) pops in, etc.

Though, it has to be said, in essence: the same safety is guaranteed when such an old school analog HV circuit is developed and used properly.

Because the safety measures are all based on the same electric/electronic properties: where and when and under what situations have high DV voltages to be dropped (immediately) to safe values, and what are safe values, given (say) a laboratory situation.

Earlier video (1 October 2022) is here: https://youtu.be/2zqOVpT3Abk
Much more links to oscilloscope circuits are in the textbox of this earlier video.

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I keep all my YT videos constant actual, so the original video’s with the most recent information are always on YouTube. Search there, and avoid my circuits that are republished, re-arranged, re-edited on other websites, giving not probable re-wiring, etc. Some persons try to find gold via my circuits. I take distance from all these fake claims. I cannot help that these things happen. Upload 1 October 2022.