power

Hi readers :), Vin is fed with the PWM signal coming from an op-amp to be amplified and fed into the load R1 (1 Ohms). The purpose I design this is I want the voltage source to be a constant 5V which is independent of the load (1 Ohms or 100 Ohms). So basically, this circuit has an op-amp which...

Hi readers, I am doing an Op Amp voltage regulation of voltage drop across load. As you can see from diagram, I have a fluctuating_Vin (0V to 50V) and I want the voltage drop at load (100 Ohms) to be the same (14V) at all times no matter whether input voltage is 20V or 30V or 50V? Note: I...

Hi readers, the IN node has triangular wave converted from square wave pulse. This Op-Amp acts as integrator. However, when I attach the same integrator circuit to convert this triangular wave (IN) to sine wave, the Output (OUT) I got is still quite triangular and not quite a good sine wave...

Above is the graph across R7 (Load). Hi readers, Flip Flop with Ne555 timer means turning on an led and another one off, as shown in picture, and this alternate on and off pattern continues. This video can be found at Click Here . I have succeeded in amplifying one of the 2 signal as shown in...

Above is the load power Hi People, I created this npn transistor circuit and it works fine. So basically, it receives this square wave impulse (0 to 2V) and send it to the 10 Ohm(Load) to be amplified to become (0 to 10V). Question: How to simulate the same way (Load Power Output should be...

To view my We_bench power supply schematic Click here In the picture above, how does the power supply limit its max current and it has been fascinating for me to figure out how. Does anyone have a clue on this? I just know that the capacitor and diode help to rectify the AC output of...

Hi readers, Hairdryers (240V AC) actually works on a design which current passes through the heating filament (Maybe consume 220V) to produce a lot of heat whereas through the DC motor (Maybe consume 20V). I have always been curious about this Question: Hair dryer has an option of choosing the...

Hi. above is a charging cut-off circuit. As you can see in my demo. when voltage source is 5V, the load (R9) has 5W power. When voltage drops to 4V, the load (R9) has 0 W (cut off). However, my lithium ion charging pin for my battery is 4.26V. Thus, when battery fully charged at 4.2V, the...

Hello, I am new to stepper motors and am having a problem. I have a machine that operates in all three directions (X, Y and Z) and has motors. When I do linear movements (one after another) everything goes well I reach a fairly high speed and I am able to lift my load. However, when I want to...

Hi, just curious, A bulb (30 Ohms , 100W) is connected in series with NTC Thermistor (200 Ohm at room temperature). Since the ohmic resistance of NTC Thermistor will decrease over time, how long does it take normally for a thermistor from 200Ohm to reach close to 0 Ohm) which means all power is...

Hi I have a design requirement and are having an issue of designing a method to achieve it I have resistive elements that change with temperature and generally start with slightly different resistances in any case, what i need to achieve is a way to balance the resistances or a method to...

Hi, below is a AC-AC frequency converter with a step down voltage from 200 to 20 Volts Question: As you can see that the efficiency is 1.55/2.251 which is about 66%. May i know how to improve the efficiency of this circuit. I have tried to change the capacitance of capacitor since it...

Hi, I have designed an LCC split-capacitor converter and while browsing the data sheet for my resonant capacitors, noticed how much the AC voltage of an MLCC C0G type derates with frequency. My converter is running 200-400kHz. Here is the data sheet: KEM_C1039_KC_LINK_C0G-1315560.pdf...

Hi All I am new to the forum. I am working on a project, where i need to control 24VAC solenoids using my microcontroller. Previously i have used standard bulkier relays, but i now need some thing much smaller in design, therefore aim to use the AQH2213AX SSR. Can anyone advice, if the design...

I am sure axial are used in wind turbines so i will use it as my example. Say you are using the wind turbine to generate power but its getting to windy and you want to slow down the turbine to bring it to a stop. What i want to know is ... If you can cut off the power thats been generated, to...

Hi all! First post here, please excuse the lengthy read and thanks in advance for any help you can offer. For background, I'm a hobby-level tech nerd, mostly with audio equipment though... tends to be a bit modular, haven't designed many circuits. Super handy with a soldering iron, quick...

Hello partners I am an engineering student and I am doing my graduation project. I try to send information from the Photovoltaic Panel to the computer. In order to do this, I made a design of a circuit that can measure the voltage of a panel that is generating between 25 and 44 volts. This...

Good afternoon to everybody. First post over here! :D I am working on the estimation of junction temperature from top case temperature measurement. I have seen that manufacturers avoid the characterizing the molding this resistance which is crutial for this purpose. From now on I will take...

I was trying to visualize a beginner circuit problem on my breadboard and I plugged in my circuit, touched a resistor and got a nasty shock. I am a cs student playing with circuits to build some logic gates so I really am a complete beginner. Why did this happen? How can I prevent this from...

I want to design a LED driver that is compact and uses mostly SMD components. It will run 1 LED at 700 mA and 3 V, and be user dimmable with a PWM signal (0-100%) as well. Additionally, It will plug into a USB port to run off of 5 V. My question is that which design will yield the least amount...