Hi
I need to have 5 x 5v outputs driven by the teensy 4.1 pins. These outputs will then close a 5v Circut to switch on and Off a relay, Such as a Solid State, and drive a Buzzer, now I know that the Solid-state Relay can be driven off the 3.3v pin as it has a control range of 3-32 VDC, and I have tried it. I also know you can get 3.3v buzzers. However, I don't want to overload the Teensy, so would prefer to switch at 5v as its an external source, the grounds are connected and common. Can I use a transistor, Most transistors I have seen NPN, Require a 5v Switching current at the base, and resistor value. Can you please assist if a Transister is the way to go here, if so what model do you recommend. and resistor value. I just need High and low, not PWM.
thank you
Gary
I need to have 5 x 5v outputs driven by the teensy 4.1 pins. These outputs will then close a 5v Circut to switch on and Off a relay, Such as a Solid State, and drive a Buzzer, now I know that the Solid-state Relay can be driven off the 3.3v pin as it has a control range of 3-32 VDC, and I have tried it. I also know you can get 3.3v buzzers. However, I don't want to overload the Teensy, so would prefer to switch at 5v as its an external source, the grounds are connected and common. Can I use a transistor, Most transistors I have seen NPN, Require a 5v Switching current at the base, and resistor value. Can you please assist if a Transister is the way to go here, if so what model do you recommend. and resistor value. I just need High and low, not PWM.
thank you
Gary