So, I created a PWM-based ramp-up circuit after getting help on a previous forum:
http://forum.allaboutcircuits.com/t...tor-ramp-circuit-still-have-questions.122348/
This is my final circuit:
http://goo.gl/jjHcfN
I'm wanting to have a small motor connected to the emitter of a TIP3055 NPN transistor and to ground so that it will turn on when the circuit is active. The motor is very small, and based on my little multimeter, it is ~1.6ohm (not kilo, just ohm). When the motor isn't connected, the ramp-up circuit behaves as expected, and the voltage goes from zero to full when measured between the emitter and ground. However, when the motor is connected, the emitter voltage drops, and the motor barely spins. What am I doing wrong? Am I using the wrong type of transistor, or have I wired it improperly? Admittedly, I'm not very good with transistors...
Thanks!
http://forum.allaboutcircuits.com/t...tor-ramp-circuit-still-have-questions.122348/
This is my final circuit:
http://goo.gl/jjHcfN
I'm wanting to have a small motor connected to the emitter of a TIP3055 NPN transistor and to ground so that it will turn on when the circuit is active. The motor is very small, and based on my little multimeter, it is ~1.6ohm (not kilo, just ohm). When the motor isn't connected, the ramp-up circuit behaves as expected, and the voltage goes from zero to full when measured between the emitter and ground. However, when the motor is connected, the emitter voltage drops, and the motor barely spins. What am I doing wrong? Am I using the wrong type of transistor, or have I wired it improperly? Admittedly, I'm not very good with transistors...
Thanks!