That is NOT a voltage regulator. It is an emitter follower current amplifier. The current gain of the 2N3055 is not infinite, the voltage will vary depending on the load current. But it works well as a miniature motor speed controller.
This is so misleading - First it is NOT a regulator Second the pot would quickly burn out as the Base current is very high Third a heat-sink is needed Fourth the wire gauge is too thin Fifth the leads of the pot will break after some use Sixth he missed the chance to have a cap multipier
This is so misleading - First it is NOT a regulator Second the pot would quickly burn out as the Base current is very high Third a heat-sink is needed Fourth the wire gauge is too thin Fifth the leads of the pot will break after some use Sixth he missed the chance to have a cap multipier
This is so misleading - First it is NOT a regulator Second the pot would quickly burn out as the Base current is very high Third a heat-sink is needed Fourth the wire gauge is too thin Fifth the leads of the pot will break after some use Sixth he missed the chance to have a cap multipier
O problema destes circuitos caseiros ,e disto ninguem fala va-se la saber porque,e a sua queda de tensao,quando se aplica uma carga...uma lampada ou motor na saida de ajuste,ou seja por exemplo uma lampada de 12 volts 21 watts quando ligada na saida de ajuste a 12 volts reais,nao tem o brilho que deveria ter ao ser ligada a 12 volts reais,e se na maioria dos videos de facto mostra a lampada la ligada com os 12 volts e o brilho normal,e porque a voltagem la injectada de momento nao sao os 12 volts reais mas sim uma voltagem superior talvez 15v 20 v ou mais para ela dar o brilho normal,e para provar isso e muito facil em antes de por a carga lampada e regular a saida ajustavel para os 12 volts sem carga e so depois ligar a lampada,entao ai pode-se verificar a queda de tensao de 12 volts reais para 7 volts 6 ou 5 volts,porque de facto nao pode ter uma quebra tao acentuada,no aceitavel talvez 0,5 volts,dai a grande lacunas destes circuitos caseiros,nao quero dizer mal destes projectos e bem haja quem os faz e ate sao interessantes,mas na realidade tem este senao.
Boa tarde meu nome é Josué Ribeiro Uai eu fiz o meu igual o seu mas nao funcionou minha fonte é de 12v será que interfere os outros projetos que vc faz eu fiz e deu certo aguardo a sua respostas
This is so misleading - First it is NOT a regulator Second the pot would quickly burn out as the Base current is very high Third a heat-sink is needed Fourth the wire gauge is too thin Fifth the leads of the pot will break after some use Sixth he missed the chance to have a cap multipier
This is so misleading - First it is NOT a regulator Second the pot would quickly burn out as the Base current is very high Third a heat-sink is needed Fourth the wire gauge is too thin Fifth the leads of the pot will break after some use Sixth he missed the chance to have a cap multipier
This is so misleading - First it is NOT a regulator Second the pot would quickly burn out as the Base current is very high Third a heat-sink is needed Fourth the wire gauge is too thin Fifth the leads of the pot will break after some use Sixth he missed the chance to have a cap multipier
@@AhangarRashid Ib = Ic / hFE hFE is low at high current between 10 and 20 If Ic is 2A then Ib could be as high as 100mA Max power for a pot is typically 0.2W, so at 20V that is only 10 mA
Answers is that other NPN power transistors can be used subject to the orginal ratings of the 2N3055. The TIP3055 is lower rated at 90W. In this case I would suggest the TIP35C at 125W 100v 25A. There's also plastic power transistors with the MJL, MJH and MJW typecodes. These tend to have higher transient frequency figures than most metal cased transistors. This is important with regards to audio clarity in amplifiers.
Please make a video on 300w 20Amp Buck Converter module, it's voltage and Current can be regulated and variation in in input voltage don't effect on output voltage and Current, or make some circuit like it because it's very expensive module
