This is a Cheap Offset Simple Video Buffer Circuit Diagram. This has to do with the wheels position in reference to the hub. A zero offset is in the middle. Referring to how far the wheel goes in or out from the fender. This circuit has proved to be an effective video buffer and will easily drive a 75- load to 1.5-V p-p output. BW is better than 20 MHz and there is less than 0.05-V dc offset, which is the difference in VBE of Ql and Q2. The supply lines should be well bypassed, 5 V or more.
Cheap Offset Simple Video Buffer Circuit Diagram