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Ri and Ro – What do these acronyms mean?
I am trying to make sense of the below circuit diagram. What do Ri and Ro mean? What purpose do the resistors after the Pinouts of Pin 3 and Pin 2 serve? This is the datasheet for the sensor:...
View ArticleWhat changes in the electrons before and after a voltage drop?
It is easy to visualize gravitational potential energy as a function of the position of height, and a change in this potential is manifested in a change in height. Further, by the work-energy theorem...
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How do I calculate, or measure, all values in a simple A.C. circuit?
I’m trying to figure out how all the formulae fit together regarding A.C. currents. Given this circuit and equations: I figured out the following: E = 120 V (impressed EMF) L = 0.160 H X = L * 2π * f =...
View ArticleCurrents when converting voltages down
Okay, so I have what could be considered a silly question I should’ve probably learned when I started working electronics way back when, but I just now thought of it and haven’t really needed to ask it...
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Decreasing the resistance in the input circuit of a transistor and its effect...
With reference to this circuit: Question: When the resistance $R$ is decreased, how does the lamp’s brightness and the voltmeter’s reading change? My answer: The input resistance of a transistor...
View ArticleCharging by induction
When we charge an conductor by induction and grounding .Then firstly we bring a negative charge (just suppose) to the conductor . As a result the mobile electrons of the conductor gets repelled and...
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How to interpret Vcc and GND on integrated circuits?
I am a little confused about power supply markings on ICs. For example, if I have an IC named U1 stating that Vcc should be 5V, can I connect it this way: simulate this circuit – Schematic created...
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generate high voltage using LM555 with a transformer
I’m a French student (please forgive my bad English spelling) who works on a system of portable echograph (you can find the information of the project on the wiki of echopen). Could you help me please?...
View ArticleAre all DDR3L (1.35V) DIMMS safe to use in a computer system that uses DDR3...
The sales support of (the consumer/prosumer sales subsidiary of) a DRAM manufacturer answered a pre-sales question I made with (translated from an email in French): 1.35V Memory DIMMs are dual voltage,...
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Can I use a 5V phone charger to run a device which expects 3.7V battery power?
I have an old mp3 player which originally ran from a 3.7V LiPo battery. It could be charged from USB using a mini-usb connector. The device goes into charging mode when power is present at the usb...
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