Calentador para pastillas ahuyenta mosquitos v2. Heater for pills scares mosquitoes v2

125

01:02:14

R= 15k / 5W
Potencia total on R = 
220Vac * 0.0183A ≈ 4W 

published 7 years ago

hurz

7 years ago

220Vpeak is 155.6V RMS ; 155.6V x 18.3mA = 2.85WattPeak ; actually its just 2Watt when current is also transformed into rms

AleCTronic

7 years ago

Hurz: the peak voltage of 220vac is not 1/2 Vrms; is Vac * √2, in this case, 220 * √2 = 311Vp. To make another type of calculations, that formula is used. But in this circuit the Vrms is used. so the RMS voltage is taken because it is what "sees" the resistance. Greetings.

hurz

7 years ago

Alec bobo, follow me. You set your voltage source here 220V PEAK, right? Yes right. 220V peak is just 155.6V RMS and not 220V. For 220Vrms you need 311V PEAK. My first statemente was just saying what you have in your circuit here, and this is wrong! Your calculation is also wrong. Read first then ask.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.