Tagged Questions

3
votes
2answers
471 views

Can someone help me understand this H-Bridge?

I have an old RC car but without the transmitter so I built my own Rx/Tx using MCU and 2.4Ghz transceiver, however, I want to use the car's original H-Bridge but not sure if I understood how that ...
1
vote
1answer
113 views

If I made an h bridge out of silicon controlled switches, would I still need a driver?

My question is relatively simple. If I arraged four silicon controled swithces, like the one here, to form an h bridge, could I drive it directly from the logic level? Since only gate to gate voltage ...
2
votes
2answers
1k views

H-Bridge Transistor Smoking (Bipolar BJT Transistor)

I'm using the following circuit, with 12V appplied to the motor, and either high (5V) or low (0V) to each transistor through a 1k resistor. The transistors used are TIP 142 and TIP 147. The diodes I ...
3
votes
2answers
897 views

1.8V to 5V, still not comfortable with transistors

I have a H-bridge IC L293DNE that needs 5V input signals to operate, however my available outputs are only 1.8V from a Gumstix Overo GPIO pin. I have a power supply that supplies me with +5V 1A. I've ...