modified 2 years ago

TK-FP04-DiodoZener

00:31:20

* Práctica de una fuente de poder con un diodo zener. La carda es una reistencia de 10 ohms y el pot de 100 ohms con la resistencia en paraleo del mismo valor. La coriente de carga de entre 200 a 500mA. Para el cálculo de la resistencia de protección de zener se calcula:

Rdz= (Vs-Vz)/(Iz+Iload)= (15-5)/(0.05+0.3)= 18ohms, aprox 20-30ohms

* A practice of a power supply with a diode zener. On this case the current load of around 200-500mA with the resistance of 10 ohms and on serie with the pot 0f 100 and parallel resistance of same value.

The resistance  for operation of the Zener (serio to the rectifier diode) is :

Rdz= (Vs-Vz)/(Iz+Iload)= (15-5)/(0.05+0.3)= 18ohms, approx 20-30ohms

published 2 years ago

jacyhenry

1 year ago

You have a serious issue with this circuit. You're sending about 3 or 400 milliamps through a zener diode. 99% of zener diodes use 20 milliamps or less. Unless you're using some kind of large strange industrial zener diode for some reason. You'll smoke any diode that you put in there. Try increasing the zener resistor to a couple hundred ohms to get your current down to about 10 milliamps then just use a pass transistor as a voltage source you'll get much better results.

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