hi, we are using the chip factory to make traffic lights and other models for years 7, 8 and 9 to program so they can get used to the chip factory, but there is a problem, when we swap the LED's for bulbs, there is not enough current to power them, we sorted this by using 3 transistors to amplify the current (see diagram), but when the red and amber are on at the same time,they are dimmer than what they should be, is there a way to resolve this problem without using 3 seperate batteries?
This is the board we are using: **broken link removed**
Circuit we used:
**broken link removed**