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How do I measure the resistance of the battery? Please tell me. I am trying to learn how to design and build electronic circuits.
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I meant the negative terminal of the battery. I meant the positive terminal of the battery.
I am planning to use ltspice to simulate a transistor turning on a motor. I once touched the positive terminal to the negative probe of the multimeter and touched the negative terminal to the positive probe, I got a reading of 628 ohms. Should I write 628 ohm, when specifying series resistance...
what if i connect a transistor to an electric motor without connecting a resistor to the base, what would happen?
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just trying to learn how to do?
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just trying to learn how to do this.
i built a h-bridge out of 4 transistors. 1 is an npn transistor. the other 3 are pnp transistor. i connected the h-bridge to a arduino uno microcontroller board. i connected a
hobby electric motor to the h-bridge. i test this circuit many times, the arduino uno microcontroller board will change...
I got a voltage controlled oscillator. it has 4 pins. I connect the upper pin to the positive terminal. I connect the pin below that to the negative terminal. a red light turns on. the sellers says this means the voltage controlled oscillator is on and is receiving the right supply voltage. I...
Well sometimes the difference is 5 do. Sometimes the difference is greater.
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Well sometimes the difference is 5 dB. Sometimes the difference is greater.
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The setup has not actually changed.
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In post #8 I mentioned I connected a coaxial cable to the voltage...
When the battery is not connected to the voltage controlled oscillator I see this on the spectrum analyser
When the battery is connected to the voltage controlled oscillator I see this on the spectrum analyser
So is the voltage controlled oscillator transmitting a signal?
The voltage controlled oscillator is connected to a coaxial, which serves as an antenna. I shaved off some insulation and I shaved off the outer copper layer. I removed the outer copper layer. The upper pin is connected to the positive terminal and the pin below that is connected to the negative...
I connect a coaxial cable that acts as an antenna.
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when I use the spectrum analyser. I see background noise at -25 dB, no I don't mean dBm. then when I connect the battery, to the supply pin, the noise is reduced to -60 dB.
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1 axis on the spectrum analyser reads dB...
I connect the battery to the supply input. the seller says if the input for tuning frequency is 0 volts, the output is 70 megahertz I think. does this mean the voltage controlled oscillator is transmitting a radio signal?
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