Diagram Guide

Showing posts with label 1. Show all posts

Thursday, November 20, 2014

1 Lamp with 2 switches

Series 1 light 2 switch configuration is intended to control lights from two locations arefar apart. Application of series 1 light with 2 switches are often implemented in thehallway or tunnel. In the application in a hallway or tunnel, with a series like this we can turn on or turn off the light from each tunnel or hallway door. The number of lights can bereproduced by paralleling. The circuit is very simple because only built of 1 and 2pieces of fruit lamp selector switch. If you want to use a lamp with a power greater then the switch can be replaced with 1 piece contactor (relay) for each switch. Then switchused to turn on and turn off the relay replacement S1 and S2.

The working principle with 2 series 1 light switch is the light will light when the S1 and S2 different position, and the lights will be on at the time of the switch position S1 and S2 together. In the installation of switches S1 and S2 each put at the end of the hallway or tunnel.

Wednesday, November 12, 2014

Adjustment power supply values 1 25 15V Max current 0 5 amp

This is power supply that have Voltage output fine the value has 1.25-15V. From by Output current that be valuable about 0.5 amp that 12V and 0.2 amp that 15V.
When Volt , from 220V houses reach transformer. It will modify Volt 220V to be 18VAC already to change rectifier circuit. Which D1, D2, C1 and R1 wasp be Full wave rectifier circuit. For modify DCV to ACV to a signal DCV. It make get a signal DCV that have voltage at pin 3 of IC1 be 20V. From that time DCV signal this reach fight DC Regulator circuit. Which use IC number LM317. This circuit will perform to maintain one’s position Voltage smoothly. Which level output voltage at get this will go out the way pin 2 of IC1. By have capacitors C2 be voltage filter in order that voltage output level of the circuit is will high class modify to follow fining. The performing fee withstands VR1 there.

Saturday, September 6, 2014

1 2Watt Mini Audio Amplifier Circuit based KA2214

This mini audio amplifier schema is based on power IC KA series. This mini amplifier delivers dual audio output (stereo) at 1.2W on each channel.

1.2Watt

The KA2214 is a monolithic integrated dual audio power amplifier in a 14-pin plastic dual in line package. It is designed portable audio sets.

Download the KA2214 datasheet for detail features and specifications.

Monday, September 1, 2014

Build a 1 2 36V 5A Adjustable Power Supply with LM317

Build a 1.2-36V 5A Adjustable Power Supply schema diagram with LM317. This schema is a simple power supply schema. 1.2 - 36V adjustable bench power supply with 5A of output current. Max input voltage is 37V and output is adjustable via potentiometer between 1.2 up to 36 volts. TIP147 PNP darlington transistor boosts the current of LM317 from 100mA to 5A. LM317 is the most useful and inexpensive adjustable regulator and for this schema you can also use LM317 L that can give 100mA, thats enough for transistor bias.

1.2-36V 5A Adjustable Power Supply Circuit Diagram

D1 and D2 are protection diodes because when you turn the schema off the output capacitors are discharging and can damage the transistor or regulator. 100nf capacitors are in parallel with electrolytic capacitors to remove high frequency noise because large value electrolytic have large ESR and ESL and cant remove high frequency noise.

Thursday, August 21, 2014

3 in 1 Flash Light

Want to avoid the problem of carrying three different flashlights to perform a test? Why don’t you try integrating Ultra Violet, Infra Red and visible light together in one flashlight? Read on to know more about this.

The multi-tasking flashlight is basically composed of a metallic case, a switch, cables and connections, four 9V batteries and three different LED heads that provide the desired light beam. For the construction of this flashlight, LedEngin’s LZ4-40 is recommended. This comes with a very wide wavelength that includes infra red and ultra violet light. Distinct visible light color temperature can also be found

The first step is to build the body of the flashlight, using an aluminum tube. Next come the drilling and cutting for switches and covers. Once the body is finished, the work on the constant current driver should be completed, adding the proper terminals for the batteries and the base for the LED heads.

Once all the power source wiring is completed and insulated with heat shrink tubing, the LED heads are assembled and connected. These are basically composed of an aluminum cap. The LED base and the power source connections come from the batteries.

Tuesday, August 12, 2014

1 5 volt dual LED flasher Wiring diagram Schematic

This 1.5 volt led fasher runs more than a year on a single d" cell and alternately flashes 2 LEDs at about a 1 second rate. The schema employs a 74HC14 CMOS hex inverter that will operate at very low voltages (less than 1 volt). One section is used as a squarewave oscillator (pins 1 and 2), while the others are wired to produce a short 10mS pulse on alternate edges of the square wave so the LEDs will alternate back and forth. The output sections each use a capacitor charge pump to increase the voltage for the LEDs.

The schema draws an average current of 800uA from the D battery and the LED peak current is about 40mA with a fresh battery and drops to about 10mA as the battery voltage falls to 1.1 volts. The capacity of a alkaline D cell is about 12 amp hours with a cutoff voltage of 1.1 so the schema should run about 12/.0008 = 15000 hours or maybe 625 days, but I havent verified that yet. The idea for this schema came from a single 1.5 volt LED flasher by Dave Johnson that can viewed at

1.5 volt dual LED flasher Circuit Diagram

Author : Bill Bowden