| White LEDs have a forward voltage drop of around 3.6 V. If we wish to operate a white LED from a single 1.5 V dry cell or 1.2 V rechargeable...
More about Design (644)
| The idea behind this project is a simple one. The power supplies for a (A)DSL modem and accompanying WLAN router can draw a total power of a...
| This volume control makes use of an operational amplifier and a few passive components to mimic the operation of a logarithmic control while...
| Suppose you need an oddball resistor value like 2.8 kO but you only have 2.2 kO available. Of course you can create the desired value from t...
| The circuit allows NiCd type LR03 (AAA) and LR6 (AA) rechargeable cells to be discharged in a controlled manner. The discharging (load) curr...
| Märklin’s light signal Type 74391 (blocking signal) for size HO model railway sets is fairly new and, at 10 euros (£7•00), reasonably afford...
| If you are a habitual user of PLCs (programmable logic systems) then you may be frustrated with the fact that you are paying in excess of £...
| Metal tools, in particular screwdrivers, may become magnetic. The powerful magnets in loudspeaker drive units fitted close to the tool stora...
| It’s a reality that a newly built microprocessor board does not work spot-on, or a board gives up the ghost after many years of service. Thi...
| The R8C Service Page and the R8C Forum topic on our website clearly show that the 16-bit Tom Thumb Starter Kit from the February 2006 issue...