Emitter voltage completely drops to 0V from 42V during the pulse (transistor conducting or transistor saturated). That in contrary with the pure resistive load (the 4. 7 Ohm resistor in the last video), where the Collector - Emitter voltage NOT completely drops to 0V from 12 V during the pulse (transistor not fully conducting or not fully saturated) The difference is the pure
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resistive load (4. 7 Ohm) only with low 12V and the combination of toroid (+ flyback) with 1 Ohm resistor with 42V collector voltage. LOL, probably, what i mean is that the Collector - Emitter voltage completely drops to 0V from 42V during the pulse (transistor conducting or transistor saturated). So if i again modify my nano-pulser and use the 100KOhm pot (instead of the 10K now) perhaps i can increase the pulse width even more to fully saturate the transistor at even higher collector voltage. Almost; the probe tip /ground is reversed, so the probe tip is at the junction csr / filter cap, and the ground on the junction flyback diode / csr, see at 13:59 in the video. The slope of the green line represents your unsaturated inductance and the slope of the yellow line represents your saturated inductance. The blue dot placed at the knee of the current trace represents what is known as the "saturation point". The slope of the green line should evaluate to 173 H (your 6-turn inductance) and the slope of the yellow line should evaluate to 30nH (as if the 6t winding was wound over the air, which has r = 1 ). You can disprove this terrifying hypothesis by temporarily shorting out the winding/inductor. When you do this, the current pulse should become rectangular, if the BJT is switching quickly enough. I only query this as a coloured ferrite typically indicates an iron powdered core and these have fairly low permeability. Also...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
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The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
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This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
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