now that my exam is done i have free time back in my hands and i thought ill restars robotics... can anyone help with easy h birdges. im tired of all those ldr for ir an all those wires dangling off arms of my humanoids. so can anyone suggest me a compact form of an h-bridge or some ic that can be useful??

 

Here's a link to Steve Bolt's 4-transistor H-bridge:
http://www.solarbotics.net/library/circuits/driver_4varHbridge.html
There are a number of other bridge circuits on that site.

Here's a list of some datasheets and applications notes I've collected. You could select a few that interest you, and find the datasheets yourself on either manufacturer's websites, or places like alldatasheet.com.

AN1681 - Applications of Monolithic Bridge Drivers (from ST Microelectronics site)
CA3169 - SOLENOID AND MOTOR DRIVER
CS3717AGNF16 - 1A H-Bridge Stepper Motor Driver
CS3720XDPS7 - 2A H-Bridge Driver
Design Tip - Bootstrap Components for Control ICs - dt98-2 (from the International Rectifier site)
DRV592VFP - - 3-A HIGH EFFICIENCY H-BRIDGE
DRV592VFP - +-3A HIGH EFFICIENCY H-BRIDGE
HIP4080 - 80V, 2.5A Peak, HF Full Bridge FET Driver
HIP4080A - an9404 - 80V HiFreq H-BridgeDriver AppNote
HV floating MOS gate drivers - an-978 (from the International Rectifier site)
IR2111 - Half H-bridge driver
IR8200B - 3A, 55V DMOS H-BRIDGE
L293, L293D - Quadruple Half-H Drivers
L293D - PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES
L293E App1 (from the ST Microelectronics site)
L297 - STEPPER MOTOR CONTROLLERS
L298 Dual Full-Bridge Driver
L298 full wave bridge driver
L6205 - DMOS DUAL FULL BRIDGE DRIVER
L9937 - FULL BRIDGE MOTOR DRIVER
LM18298 Dual Full wave bridge driver
LMD18200 - 3A, 55V H-Bridge
LMD18201T - 3A, 55V H-Bridge
MC34920 - 2.8 Ohm (Typ) Quad H-Bridge Motor Driver
MPC17510R2 - 1.2 A 15 V H-Bridge Motor Driver IC
MPC17511 - 1 Channel H-Bridge Driver IC
MPC17529 - 0.7 A Dual H-Bridge Motor Driver with 3.0V-5.0V Compatible Logic
MSK4201 - 28 VOLT 5 AMP MOSFET H-BRIDGE PWM MOTOR DVR-AMP
NCV7701 - 2.0 Amp H-Bridge Driver
STA474A - PNP NPN Darlington H-bridge
TPIC1310KTS - 3-HALF H-BRIDGE GATE PROTECTED POWER DMOS ARRAY
UPD168116AK9-9B4-A - 7-CHANNEL H-BRIDGE DRIVER WITH A MICRO STEP FUNCTION SUPPORTING PULSE INPUT
UPD168117AFC-BA2-E1-A - 7-CHANNEL H-BRIDGE DRIVER WITH A MICRO STEP FUNCTION SUPPORTING PULSE INPUT
UPD168117K9-9B4-A - 7-CHANNEL H-BRIDGE DRIVER WITH A MICRO STEP FUNCTION SUPPORTING PULSE INPUT

 

thanks dude. really helpfull guy