rompelstilchen
Full Member level 2
Hello
I try to invert a 5V ttl with a bc818...I need to figure Rb when Rc is 1K (guess I dont need high current since there is no load)
in the datasheet, the BC818 has a gain between 250 and 600 (no idea what value to choose) for 100mA Ic
I tried many values or Rb, but it barely switches
I use this calculator : https://www.daycounter.com/Calculators/Transistor-Switch-Saturation-Calculator.phtml
please help
regards
I try to invert a 5V ttl with a bc818...I need to figure Rb when Rc is 1K (guess I dont need high current since there is no load)
in the datasheet, the BC818 has a gain between 250 and 600 (no idea what value to choose) for 100mA Ic
I tried many values or Rb, but it barely switches
I use this calculator : https://www.daycounter.com/Calculators/Transistor-Switch-Saturation-Calculator.phtml
please help
regards