Hello - first time poster here, with some basic experience in electronics but stronger on the computer side (CompTIA A+).
The issue: I'm looking for PNP transistors capable of handling 300-500 mA @ 2.3 V DC, for building a small H-bridge to drive a DC motor.
The project: I'm trying to design and build a simple, tiny robot car. It's another version of the common design where the car drives forward until it hits something, then reverses and turns, and then drives forward again. It would be easy, but the entire car is about the size of a dollar bill. It used to be a novelty wireless mouse, so size matters. That's why I'm avoiding MOSFETs.
What I've done so far: Originally I had an H-bridge using only NPN transistors (attached), but the motor runs at different speeds depending on which side is active (Q1, Q4) or (Q2, Q3). So now I'm looking at the PocketMagic design. The control circuit will be a 555 monopulse sending a 1 or 2 second signal to the "reverse" side of the H-bridge.
Circuit voltage: 3V
Motor: 1.7v DC, 6Ω.
Thanks in advance! I will reply, but it may take time depending on my schedule.
The issue: I'm looking for PNP transistors capable of handling 300-500 mA @ 2.3 V DC, for building a small H-bridge to drive a DC motor.
The project: I'm trying to design and build a simple, tiny robot car. It's another version of the common design where the car drives forward until it hits something, then reverses and turns, and then drives forward again. It would be easy, but the entire car is about the size of a dollar bill. It used to be a novelty wireless mouse, so size matters. That's why I'm avoiding MOSFETs.
What I've done so far: Originally I had an H-bridge using only NPN transistors (attached), but the motor runs at different speeds depending on which side is active (Q1, Q4) or (Q2, Q3). So now I'm looking at the PocketMagic design. The control circuit will be a 555 monopulse sending a 1 or 2 second signal to the "reverse" side of the H-bridge.
Circuit voltage: 3V
Motor: 1.7v DC, 6Ω.
Thanks in advance! I will reply, but it may take time depending on my schedule.
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