How to build a 2 x 3W stereo audio amplifier with BA5406?

Reading time: 3 minute The DIY kit shown is an AB class audio amplifier that uses the BA5406 integrated circuit produced by ROHM. Easy to make, with only a few electronic components, it can connect without problems to most signal preamplifiers or to the output of sound cards from the PC, its input impedance being high.

 1,336 total hits, 3 hits today

MAX712 - Controller for fast charging of NiCd / NiMH batteries

Reading time: 4 minute MAX712 (and MAX713, with very small differences) is a specialized integrated circuit for fast charging of NiCd or NiMH batteries from a direct current voltage source. From 1 to 16 elements (1.2V) connected in series can be charged, their number being programmed by hardware.

 1,182 total hits, 5 hits today

How to build a 1W audio amplifier with TDA7052?

Reading time: 2 minute There are many applications that require a simple, inexpensive and reasonable power amplifier for portable circumstances (trips). The TDA7052 is a very easy to build, battery-powered power amplifier with decent power for its size and simplicity. The article contains two construction variants of the 1W amplifier.

 1,448 total hits, 1 hits today

2N2222 - The most successful and most widely used transistor ever developed

Reading time: 2 minute The NPN 2N2222 transistor is used in applications that require amplification of low currents and low or medium voltages. The article also contains macro pictures inside the transistor capsule produced by Motorola, ITT Semiconductors, CRP Industries, IPRS Baneasa and National Semiconductor.

 2,793 total views

EFD108 - The most used germanium diode in Romania (IPRS Baneasa)

Reading time: 3 minute Point diodes (like EFD108) can be considered the "ancestors" of Schottky diodes. They used to be called "Schottky microdiodes with germanium". Although constructive differs a lot, the operation is very close, the opening threshold is lower than the PN junction diodes with germanium (approx. 0.2V) and they do not have that "steep bend" in the opening area of ​​the junction diodes.

 2,939 total hits, 1 hits today