Here is a really useful trick for a H-bridge. This H-bridge was find on the Internet on the BEAM Yahoo group.
*****Thanks to Bill Bigge for the trick.*****
What to do, went you have the electronic of a servo motor?
You make a motor driver!
Here is the H-bridge IC BAL6686
You desolder the IC chip call BAL6686
Here is the pin layout of the IC
You connect the motor directly on the chip. You can power
the IC chip with 5 Volts. For the Input voltage, 5Volts is OK.
When connecting the IC chip to 5 Volts, put a 1K resistor
to the Vcc.
©2001 Jérôme Demers. All rights reserved.