Circuit knowledge

The generator described is a good value·for money alternative to the commercially available types; it uses  only one CMOS-IC 4060 and provides up to seven different baud rates. Lets learn more regarding the pin out configuration of the IC 4060.

Each serial data interface requires a baud rate generator: terminal, printer tape interface. . . lt is often not possible to use the same generator for input and output, so it would be useful to add one to, for instance, the UART in the computer or the UART in the terminal. To keep the ,costs of such an addition down, we have developed a generator which uses just one IC, two resistors, one preset potentiometer and a capacitor. The CMOS 4060 is a 14-stage binary counter with an internal oscillator which only requires the frequency determining RC components. As the reset is connected to earth, the counter begins to count upwards when the supply is switched on. A clock frequency then becomes available at the outputs: the higher the number of the output, the lower the frequency available at it.

 In the circuit shown the frequencies avail- able at the various outputs are: O4 = 9600 baud 08 = 600 baud 05 = 4800 baud O9 = 300 baud O6 = 2400 baud Q10 = 150 baud Q7 = 1200 baud If the outputs are wired as shown in the circuit diagram, the required baud rate can then be selected by means of a wire link. _ The oscillator frequency can be set precisely with P1, and measured either at pin 9 of the 4060 or at one of the outputs O4 . . . Q10. With the values shown, the frequency at pin 9 should be 38.4 kl-lz; at the outputs O4. . .010 the relevant baud rate. lt is often required that the clock frequency is 16 times the baud rate (for instance, with asynchronous ~ operation of the 6850, 8251, 280- SIO. . .). ln that case, C1 must be replaced by a 27 nF capacitor and the oscillator frequency must be set to 614.4 kHz.

As my article about  Power Supply Circuit 11.8V(12V) is equipped with the scheme, it can only be applied only to one is 12V output voltage only. All equipment that requires 12V Power Supply can use that Power Supply, for example; to turn on the car tape installed in your home without use of batteries.

What if there are your electronic devices that require 5V power supply while you are not there ADAPTER 5V power supply.
This can be overcome by assembling the Power Supply 0 to 15 Volts Adjustable Output. 

or called Power supply multifunction.

Lets check scheme

Power Supply 0 - 15 Volts Adjustable Output.

The construction of this Power Supply Circuit is incredibly straightforward in such the simplest way that the elements used area unit straightforward to be settled whereas the value is incredibly low cost. With the largest provided current at one A, the output voltage is adjusted for minimal  ripple result and stable within the vary of zero V to fifteen V DC. This is often created attainable by the quality electrical device output of one.5 A with a primary voltage of 220 V and secondary voltage of eighteen V. the present is being restricted by the Zener diode D1 with a rating of eighteen V and one.5 W. The linear potentiometer R2 is liable for the regulation of current.

2N3055 – a complementary atomic number 14 Epitaxial-Base planar NPN electronic transistor|electronic transistor|semiconductor device|semiconductor unit|semiconductor} mounted in Jedec TO-3 metal case to be used as power Transistor
Bridge Diode – additionally referred to as bridge rectifier that has four diodes organized in a very bridge configuration wherever the output voltage has identical polarity with either polarity of the input voltage

The Power semiconductor Q1 may be a classic sort that might need to be placed in a very appropriate heatsink to suppress the high temperature reduction throughout the operation of the schema. the warmth dissipation are continuous throughout the presence of the best current. The bridge diode GR1 can offer full wave rectification from the AC input which can additionally convert the incoming electricity (AC) input into electricity (DC) output. One smart feature of the bridge diode is maintaining identical polarity of the output notwithstanding the polarity of the input.

The 15V an influence provide is also accustomed handle home automation system which may be supercharged by twelve V DC. they will be created into power adapter models to support a good form of applications like TFT monitors, transmitter,  notebook, camera digital , telecommunications, PSP, routers, stringed instrument Guitar effects, extenders, iPod’s, scanners, CCTV, printers, container players, radios, etc.