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Sunday, November 16, 2014

Digital Thermometer 0 100 0°Celsius

Digital Thermometer 0-100.0 ° C is a digital thermometer that operates in mode temperature measurement in Celsius (° C). Digital Thermometer 0-100.0 ° C in this article using the form data processing microcontroller AT89C4051.

Temperature sensors used in Digital Thermometer 0-100.0 ° C. This temperature sensor LM35D. Digital Thermometer 0-100.0 ° C. It uses the temperature measurement data viewer in the form of 1 line LCD viewer. Digital Thermometer 0-100.0 ° C. It can display the temperature measurement data with a resolution of 0.1 ° C.

Digital Thermometer 0-100.0 ° C

Digital Thermometer 0-100.0 ° C. These temperature sensors make use of LM35D as temperature sensing. In Digital Thermometer 0-100.0 ° C. This temperature sensor measurement data this LM35D (Level Voltage) is then converted into 4-bit binary data using the ADC CA3162. Then the 4-bit data from ADC CA3162 which is a measurement of data if the temperature is in the AT89C4951 microcontroller so that it becomes an operating principle of temperature measurement based on digital thermometers. In the final stage of the Digital Thermometer 0-100.0 ° C. These data digitla adlah appearance temperature measurement, using digital data viewer of the LCD 1 line.

Thursday, October 16, 2014

Simple 0 50V 2A Bench Power Supply Circuit Diagram

I use the lm10 IC because it has a reference voltage and that’s useful for dc power supply. With two ICs can take different output voltage and amperage. This circuit is protected from short circuit.P2 is for controlling the current at the range of 0-2A. Stabilize the output voltage with R4 on negative pin on op-amp and with R2 & P1 on positive pin.

0-50V 2A Bench Power Supply Circuit Diagram

Op-amp output controls T1 that not let ripple of voltage.T1 increase or decrease ampere of R6 and control the voltage of T5 & T4. Pin 1 is the reference voltage and reference voltage is losing some voltage on R1 that has 100uA . This current passes through P1 too.
Vlose p1=100uA*Rp1

This lose voltage regulate output voltage rate of output current is compare between reference voltage of P3 and lose voltage on R11.T3 is protecting short circuit with R11. For reduce out put voltage to 0v should parallel one resistor 470 ohm in out put. Minimum voltage is 0.4v. The maximum output voltage is fixed with R1b and should not become over of 50v. Therefore your transformer should give 36V, 3A with 4700uF capacitor. T6, T5, T7 need heatsilk.

R1a = 2,2 K
R1b = read the text
R2 = 10 K
R3, R7 = 3.3 k
R4 = 390 Ohm
R5 = 47 K
R6 = 3.3 K 1Watt
R8 = 180 Ohm
R9, R10 = 0.47 Ohm 3Watt
R11 = 0.075 Ohm 2Watt
R12 = 470 Ohm
P1 = 500K liner potentiometer
P2 = 4.7 K potentiometer
P3 = 10 K potentiometer
C1 = 1nF
C2 = 10nF
C3 = 22nF
C4 = 47mF 63v electrolytic
C5 = 4700mF 80v electrolytic
T1, T2 = BC161
T3, T4 = BD141
T5 = BD241
T6, T7 = 2V3055
D1, D2 = 1N4148
D3, D4 = 1N4001
IC1, IC2 = LM10C

Thursday, August 21, 2014

Power Supply 0 15 Volts Adjustable Output

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.

Wednesday, August 20, 2014

Build a Triac 0 Point Switch Wiring diagram Schematic

How to Build a Triac 0 Point Switch Circuit Diagram. The point where the line voltage is 0 V is the Zero CrossOn the initial part of the positive half cycle, the voltage is changing rapidly from zero causing a large current to flow into capacitor C2. The current through C2 flows through R4, D3, and D4 into the gate of the TRIAC Q2 causing it to turn on very close to zero voltage. Once Q2 turns on, capacitor C3 charges to the peak of the line voltage through D5.

Triac 0 Point Switch Circuit Diagram

When the line voltage passes through the peak, D5 becomes reverse-biased and C3 begins to discharge through D4 and the gate of Q2. At this time the voltage on C3 lags the line voltage. When the line voltage goes through zero there is still some charge on C3 so that when the line voltage starts negative C3 is still discharging into the gate of Q2.

Thus Q2 is also turned on near zero on the negative half cycle. This operation continues for each cycle until switch SI is closed, at which time SCR Ql is turned on. Ql shunts the gate current away from Q2 during each positive half cycle keeping Q2 from turning on. Q2 cannot turn on during the negative cycle because C3 cannot charge unless Q2 is on during the positive half cycle.