To insure to turn the transistor fully on, you can double the value for collector current, which will result in a base resistor value half of what this calculator gives you. Voltage drop is the Vbe(sat) value, you will get this from the datasheet looking at the graph for Vbe and Vce(sat) vs. A design guide not included in calculations for now.īase voltage is the voltage that you use to drive the base of the transistor with. Vce voltage is the voltage over collector and emitter. To calculate for the worst case use the minimum given Hfe value or the correct value for the collector current you need. The current gain, beta, Hfe, is a value you can find in the datasheet for the specific transistor. Its IMPORTANT that you read the following.Ĭalculate the current you need to pass through the transistor when its on, that is your collector current. Here is a calculator for transistor base resistor values. Busbar and primary circuit design for Tesla coils and inverters.Rectifier selection for Tesla coils and inverters.Topload design and selection for Tesla coils.Tesla coil and DRSSTC frequently asked questions.Snubber capacitor selection for Tesla coils and inverters.Secondary coil design and construction for Tesla coils.Power Factor Correction for high power inverters.MMC / resonant tank capacitor design for Tesla coils and inverters.IGBT selection for Tesla coils or ZCS inverters.DC bus capacitor selection for Tesla coils.404 Error, content does not exist anymore.

2n222 transistor