generator

Hello, I have to design a single op amp circuit that has only +15v, -15v and GND as input and outputs a symmetrical PWM signal (+V and -V) with adjustable frequency and duty cycle. I have something that works partly but not completely, I can adjust the duty cycle from ±60% to ±100% but af that...

Hi! I've solved and simulated on PSpice a balanced three phase circuit and now I'm considering the equivalent mono phase circuit. I've already done the transient analysis and I'd like to know if I can run other kind of analysis such as an AC SWEEP/NOISE (to simulate the behaviour of the system...

I need one small circuit which can be placed at the back of a switch board. The functionalities will be as follows. 1. There are 2 supply lines (220v), (A) and (B), where (A) is active in case when power supply is there OR diesel generator (DG) is running. B) is active in case when ONLY power...

Okay so i have a food processor motor but i cant find a wiring diagram and would need help how to wire it to work as a generator or just as a on off motor.

After a lot of research I end up in these 2 function generators. I found UTG2025a in a local shop for 230€(in internet cost around 400€ so I thought is good oportunity) and I was ready to buy it, but UTG962 shown up and complete blow my mind with what offers and the price(130€) I try to figure...

Tl;dr: Are putting Li-ion batteries in a Wind-up flashlight a thing? If not, what options are there for a more reliable, renewable light source? Hello, I'm a Paramedic, husband and father of a small family of 3. We don't make much money and live in an area where we are often heavily impacted...

Say there are 3 buses of: Bus 1: Slack bus with a voltage source of E=1.0 and phase of 0° Bus 2: a generator and a load. Bus 3: a load. The line impedance are given below: z12 = 0.05 + j0.1 z13 = 0.02 + j0.05 z23 = j0.05 z11 = -j100 z22 = infinity z33 = -j40 The generators and loads are given...

Say, a generator at a slack bus with a voltage source of 1 V with phase of 0° with a hazard rate of 0.083. What's the reliability of the generator in 1 year and the Mean Time Before Failure? I have worked it out and got an illogical answer. Here are my workings, can anyone be kind enough to...

The 3 buses are Bus 1: Slack bus with a voltage source of E=1.0 and phase of 0° Bus 2: a generator and a load. Bus 3: a load. The line impedance are given below: z12 = 0.05 + j0.1 z13 = 0.02 + j0.05 z23 = j0.05 z11 = -j100 z22 = infinity z33 = -j40 The generators and loads are given below...

Currently I am trying to power an Arduino project with a mechanical battery. I am using a stepper motor (NEMA23) as generator for it only needs low RPM to reach full potential (Around 600 RPM). Output of the stepper was determined at 1.8A AC @ 33V. This should be enough power for all the...

Good day! I am currently writing a short report on DC machines and I intended to use the generator onboard the Bombardier/DHC Dash 8 Q400's Auxiliary Power Unit as a focal topic. Upon searching through several documentation (both from Bombardier themselves and some airlines like AirBaltic) I...

A system consists of two plants connected by a transmission line. The only load is located at plant 2. When 200 MW is transmitted from plant 1 to plant 2 power loss in the line is 16 MW. Find the required generation for each plant and the power received by the load when lambda for the system is...

A 3-bus system data is as shown below. If the base is 200MWA, i) Find the Ybus admittance ii) Find the voltage at bus 2 and 3 after first iteration using Gauss-Seidal method For this, where do I start?

A 20kV, 100VA generator is protected by differential protection. 70% of the winding will be protected against the phase. What is the value of resistance to be located at the "Neutral to Ground" protection if the relay operates 30% out of the balance current? Below are my steps to the solution...

If a 100 KVA star-connected 400 V three-phase, 60 Hz synchronous generator with armature resistance 0.35Ω/phase and 3.5Ω reactance and leakage resistance given is 1Ω/phase. Calculate at rated load and unity power factor at i) No load e.m.f ii) Internal e.m.f. iii) percentage of regulation at...

2 generators are connected to the bus below. Given V1 = 300V, 50Hz V2 = 400V, 60Hz When the switch is opened, calculate i) the maximum and minimum voltage across both light 1 and 2. ii) peak voltage across both lights iii) maximum number of light pulsation How do I solve the issue above? Any...

Hello! I’m in the process of trying to build a non-chemical battery. I sick a bit of guidance as I tend to go down an engineer rabit hole, because of the complexity that the project is aiming. My goal is to make some kind of object that could store enough energy to charge a smartphone’s...