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Used ICs: TB2132FN – TC4052BP – BA3308 – LA4627 – SC9153A Schematic [ Click on the schematics to zoom in ]

Modifying USB OTG Cable - Mini USB - micro This is a very simple way to change the standart USB to USB OTG. The Mini or Micro USB to USB does not work if you want to use it for OTG, because 4. pin micro USB plug is not plugged. Connect as shown above.

MINI AUDIO AMPLIFIER ELECTRONIC CIRCUIT DIAGRAM The 8k2 across the 47u sets the emitter voltage on the BC 547 and this turns it on. The collector is directly connected to the base of a BC 557, called the driver transistor. Both these transistors are now turned on and the output of the BC 557 causes current to flow through the 1k and 470R resistors so that the voltage developed across each resistor turns on the two output transistors. The end result is mid-rail voltage on the join of the two emitters. The two most critical components are 8k2 between the emitter of the first transistor and 0v rail and the 470R resistor.

Simple Mini Power Inverter Circuit Diagram . Even robot systems occasionally need a negative supply voltage for some purpose or other, and in this kind of application in particular there is a need for an effective circuit that does  not  make  greater demands  then  necessary in terms of current or space. If a low current 5 V supply is needed and only +5 V is available, a natural manufacturer to turn  to  is  Maxim,  and indeed in this case they do not let us down.The best known integrated  circuit made by this company is the MAX232, a level shifter for serial ports with an integrated charge pump that does not need an external inductor.  Project  image: Simple Mini Power Inverter    Along the same lines, although with a more stable output voltage and higher efficiency, is the MAX660. The device can ‘mirror’ any input voltage between 1.5 V and 5.5 V. With a 5 V input the output is typically –4.7 V with a load of...

This charming little circuit is a genuine four-digit running-text display, complete with a Christmas / New Year’s greeting. Naturally, any competent programmer can easily arrange to have a different text scroll across the display. The associated soft-ware, including the source code, can be downloaded from the Free Downloads section of our website or obtained from Readers Services on diskette (order number 020365-11). Circuit Image : As can be seen from the schematic, the hardware consists of little more than an AT90S1200 microcontroller, a 4-digit LED display and a 5-V voltage regulator. The only external circuitry needed by the microcontroller consists of a reset circuit and a 4-MHz crystal, and the remainder of the components are limited to a few decoupling capacitors. Mini Running Text Display Circuit diagram :  In the prototype model, an Osram SLO2016 display module was used. Although this four-digit module measures only 10×20 mm, it provides an especially clear and bright disp...

LG 2900W Combo Hi-Fi system CM9740 – Power and Amp: circuit diagram SMPS schematic Power amplifier schematic