DinizApp/Electronics Center
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Electronics
Electronics
Eletrônica -
Always use analog multimeter to test this component
Always use analog multimeter to test this component
Para testar este componente sempre use o multímetro analógico -
Select the x1 scale
Select the x1 scale
Selecione a escala de x1 -
Take the probes to measure the SCR
Take the probes to measure the SCR
Pegue as ponteiras para medir o SCR -
Put the black probe on anode and the red probe on cathode. To test the shot, close a contact between anode and gate by clicking the trigger. The multimeter should show a low resistance.
Put the black probe on anode and the red probe on cathode. To test the shot, close a contact between anode and gate by clicking the trigger. The multimeter should show a low resistance.
Coloque a ponteira preta no anodo e a vermelha no catodo, para testar o disparo feche um curto entre o anodo e o gate clicando em disparo. O multimetro deverá mostrar uma resistência baixa. -
No reading should appear with inverted probes.
No reading should appear with inverted probes.
Se inverter as ponteiras não devemos obter nenhuma leitura. -
Putting the black probe on gate and the red probe on cathode, the reading should show a low resistance.
Putting the black probe on gate and the red probe on cathode, the reading should show a low resistance.
Colocando a ponteira preta no gate e a ponteira vermelha no catodo temos que obter uma leitura de baixa resistência. -
In other positions should mark infinite.
In other positions should mark infinite.
Nas outras posições deverá marcar infinito. -
SCR measurement
SCR measurement
Medição de SCR -
Shoot
Shoot
Disparo -
TRIAC in good condition
TRIAC in good condition
Triac em bom estado -
Burned TRIAC
Burned TRIAC
Triac queimado -
TRIAC in short-circuit
TRIAC in short-circuit
Triac em curto -
Formulas
Formulas
Fórmulas -
Phototransistor
Phototransistor
Fototransistor -
A phototransistor is a bipolar transistor encased in a transparent case so that light can reach the base–collector junction. The phototransistor is similar a photodiode, having higher sensitivity to light, because electrons that are generated by photons in the base–collector junction are injected into the base, and this photodiode current is amplified by the transistor's current gain. Phototransistors also have significantly longer response times. They are used inside optical couplers, with an infrared light emitting diode.
A phototransistor is a bipolar transistor encased in a transparent case so that light can reach the base–collector junction. The phototransistor is similar a photodiode, having higher sensitivity to light, because electrons that are generated by photons in the base–collector junction are injected into the base, and this photodiode current is amplified by the transistor's current gain. Phototransistors also have significantly longer response times. They are used inside optical couplers, with an infrared light emitting diode.
Um fototransistor é um transistor bipolar encapado em uma capa transparente que permite que luz possa atingir a base coletora da junção. O fototransistor funciona de maneira similar a um fotodiodo, apresentando uma sensitividade muito maior à luz, pois os elétrons gerados pelos fótons na junção da base-coletora são aplicados na base do transistor, e sua corrente é então amplificada pela operação do transistor. O fototransistor apresenta um tempo de resposta maior do que o fotodiodo. São utilizados dentro de acopladores ópticos, junto a um diodo emissor de luz infravermelha.