4 bc639 transistors are used in fan speed control circuit and speed can be adjusted with 47k trimpot on the circuit. Intel CPU fan used in circuit tests is a low cost simple circuit for begi... Read more
There are 41 applications on TTL digital doors. I am thankful to our readers, S.Demirhan(sdmh), who brought the file to me . Many of the circuits have been tested and Vocational High School... Read more
19V 3.34 Ampere Laptop adapter diagram The Dell PA-12 model is used for a wide range of models, but the exact 19 volt is a standard value for many models with 3.34 amps low configuration. Th... Read more
With this circuit built into the power supply of a battery powered device, it will prevent the rechargeable cells from being completely drained when you forget to turn the equipment off. Wh... Read more
The author encountered a problem with a microcontroller system in which the +5-V supply voltage did not decay to 0 V sufficiently quickly after being switched off. A certain residual voltage... Read more
This circuit may be used to replace the single current limiting resistor often found in dirt cheap battery chargers. The alternative shown here will eventually pay off because you no longer... Read more
It is impossible to imagine a present-day society without any batteries. Count the number of gadgets in your house that are powered by batteries, you will be stunned by the number of batteri... Read more
This mini pocket torch combines the advantages of Lithium button cells with a super-bright white LED. The lithium cells are small, have a long shelf life and have very little self-discharge.... Read more
The use of solar photovoltaic (PV) energy sources is increasing due to global warming concerns on the one hand, and cost-effectiveness on the other. Many engineers involved in power electron... Read more
Your everyday 7805 regulator is not the best choice for powering accurate measurement circuits and A/D converters, mainly because it generates too much noise, and exhibits spurious behavior... Read more
