Questions tagged [basic]

Fundamentals of electricity, electronics, components, or theory

15 questions
46 views

Bjt for trigger MOSFET

I my project MOSFET need 13 v 65% PWM to trigger but controller output is 5 volt then how can I amplify this in voltage
75 views

Maximum output power of a PA

I was discussing with a friend about maximum output power of a (class A/B power) amplifier (for example if the device following the PA can only tolerate a certain amount of power). If the input power ...
100 views

Basic circuit analysis - phase shifting

For the part of the circuit of sinusoidal circuit given below, the following data is given (effective values): $$E=10V,I_g=2\sqrt 3 A,I_2=2A.$$ Impedance of conductor is $$Z_C=5\Omega.$$ Current Ig ...
323 views

Wire 5 vibration motors on one switch

I am trying to run five vibration motors rated at 3.7 volts each on one switch. The power will come from a 12V, 40 Amp relay on my Jeep (SPOD). How can I wire the motors all together to turn on at one ...
59 views

How to determine the steady state voltage across two capacitors in parallel

Say we have two capacitors C1 and C2, initially isolated from each other and each having an initial voltage Vc1 and Vc2 respectively, where Vc1>Vc2. When suddenly connected to each other in parallel, ...
124 views

Sorry for my english and long post again. After reading this article, I realized that my understanding seemed to be wrong. I thought that to create conduction current in some wire first we need a "...
38 views

Kirchhoff Voltage Law in a two port network

In a tutorial about h parameters of a two port network, I find the below snippet in the image unable to grasp. According to KVL, the total voltage in a loop is the algebraic sum of the individual ...
47 views

How does a circuit regulate current in response to a lower voltage?

Brief background, I studied physics in college and am learning EE on-the-job through Art of Electronics and this wonderful website. So this is a follow up to a previous question I submitted here ...
50 views

monostable Eccles - Jordan multivibrator, theory

I’ve a few problems and questions to the principle of monostable multivibrator’s work. Basic schematic is as below: What is the reason for D1, C1, R3 elements at input? Why I can’t just tie a ...
38 views

Calculating for Load Resistance given a T network in between the source and the load

Problem: Calculate the value of load resistance (Rl) for which maximum transfer occurs. Attempt: What I know is that for the maximum transfer to occur, the load resistance must be equal to the source ...
53 views

Is electric charge a state variable since derivative of charge flow is defined as current?

$i=\frac{dq}{dt}$ Is 'q' a state variable in general?
89 views

What would be logic value of high impedance TTL output connected to LED

Suppose a TTL output in high impedance is connected to a LED, which is also connected to a resistor, which is then connected to ground. No circuit interferes between TTL output and LED, between LED ...
45 views

PC Racing Pedals

I have very limited knowledge of electrical engineering and mechanics (I'm hoping to learn) so please forgive me if this is a stupid/noobish question. I've been thinking about making a steering wheel ...