| The circuit presented here is of proven worth with nickel-cadmium (NiCd) batteries, but the results are less impressive with nickel-metal hy...
Ian Field (6)
| A TL431 shunt regulator can be used to ensure that a lithium cell cannot be charged to more than 4.2 V, meaning: when the cell has reached i...
| Cyclists’ pulsing LED lights are eye catching and much more conspicuous than a steady light, so it was decided to make provision for the oth...
| Anyone who's spent much time searching the web for interesting circuits is likely to have found at least one TL431 based audio amplifier...
| The TDA7052A is a readily available amplifier chip (Farnell # 526198) that has a DC controlled volume input. Here, the IC is used as the var...
| A simple LED driver circuit specially designed for use on a bicycle, with battery or dynamo powering.