Showing posts with label a. Show all posts
Showing posts with label a. Show all posts
Wednesday, October 29, 2014
Track Your Distance Through a Bicycle Odometer
Just like cars that measures the distance it can travel, you can also do it with your bicycles. We usually keep track of our mileage to see how far our strength can go but would it be of great use if we track it because we are maintaining a workout everyday considering the calories we are burning.
If you want to make your own odometer, you will need a micro controller that generates pulse and a MOSFET that converts those voltage pulses. Just remember to check your batteries all the time.
The best way of burning calories is to move those muscles everyday! Set your bikes and your odometer! Burn fats!
The best way of burning calories is to move those muscles everyday! Set your bikes and your odometer! Burn fats!
Tuesday, October 28, 2014
Open Garage Door Using A Smartphone
You do almost anything with your mobile phone, but when it comes to your garage door, you have to resort to another remote control. This garage door opener does not require the installation of an application and it works with any phone that has a web browser built-in. The system is based on the tux-graphics Ethernet board. The circuit diagram has external connections, relay and optional connection to switch to sense the state of the door. The relay contacts are then to be connected in parallel to the wall mounted push buttons inside your garage. They mounted the Ethernet board on a small piece of wood together with some screw-on terminations for the cables.
| Open Garage Door Using A Smartphone |
[source] Extremecircuit.net
Friday, October 24, 2014
Triac Light Switch as a dimers
The series of light switches this time slightly different from the voltage of work. The series of light switches can work directly on the AC power network. Light switches are using the main component of TRIAC and LDR. The circuit is very simple and the components were sold in the market.
If you want a light reception sensitivity of this circuit can be arranged then the 3.3 MOhm resistor can be replaced with a variable resistor. For more details can be seen from the following series of images.
If you want a light reception sensitivity of this circuit can be arranged then the 3.3 MOhm resistor can be replaced with a variable resistor. For more details can be seen from the following series of images.
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| Circuit Diagram |
With Triac Light Switch series is as dimers, but dimers control performed by the reception of light around the LDR. The lower the intensity cayaha received LDR then bright lights. For installation LDR need to be considered so as not exposed to light from the lamp directly.
Sunday, September 7, 2014
Build a 12V to 9 or 6 v Converter Wiring diagram Schematic
Build a 12V to 9 or 6 v Converter Circuit Diagram. This 12V to 9 or 6 v Converter Circuit Diagram enables transistorized items such as radio, cassettes, and other electrical devices to be operated from a car`s electrical supply.
The table gives values for resistors and specified diode types for different voltage. Should more than one voltage be required a switching arrangement could be incorporated. For high currents, the transistor should be mounted on a heat-sink.
12V to 9 or 6 v Converter Circuit Diagram
Wednesday, September 3, 2014
Simple 10 A Stabilized Wiring diagram Schematic
This is a heavier power supply that can deliver. 10A stabilized. The schema is built around a normal 78xx controller, but for extra power equipped with T1.For the 78xx can be taken any type. Keep in mind that the input voltage of the regulator, as the output-voltage.
3V higher See 78xx power for the available controllers.T1 must be mounted on a large heatsink when installing large capacity decreased.A negative variant of this food can be found here.
10A Stabilized Circuit Diagram
Warning: This diet is not short schema proof.
Parts List
R1, R2 = 0.18 Ω 5W
R3 = 2.2 Ω 2W
C1 = 22000μF
C2, C3 = 1μF
B1 = 35A
T1 = MJ15004
IC1 = 78xx
Thursday, August 21, 2014
Build a Stand by Power Wiring diagram Schematic for Non Volatile Cmos Rams
This is a simple Stand by Power Circuit diagram for Non Volatile Cmos Rams. To prevent loss of data when a CMOS RAM is switched from normal operation (Vcc = 5 volts) to stand-by mode (Vcc = VBAT) it must be ensured that the CS pin goes near the Vcc rail at all times.
Ac coupling to the chip select is made through capacitor C, breaking the dc current path between Vqq (and hence VBAT) and the decoder output. So, whatever the impedance state of the decoder in power down, the battery will provide current only for the RAM, low enough to keep the voltage at CS near to V^.
Power Circuit Diagram
Wednesday, August 20, 2014
Build a Tone Burst Generator Wiring diagram Schematic
Build a Tone Burst Generator Circuit Diagram. This is a simple Tone Burst Generator Circuit Diagram. The tone burst generator supplies a tone for one-half second after the power supply is activated; its intended use is a communications network alert signal. Cessation of the tone is accomplished at the SCR, which shunts the timing capacitor CI charge current when activated.
The SCR is gated on when C2 charges up to the gate voltage which occurs in 0.5 seconds. Since only 70 ?? are available for triggering, the SCR must be sensitive enough to trigger at this level.The triggering current can be increased, of course, by reducing R2 (and increasing C2 to keep the same time constant).
Tone Burst Generator Circuit Diagram
If the tone duration must be constant under widely varying supply voltage conditions, the optional Zener diode regulator schema can be added, along with the new value for R2 R2 = 82 kfi. If the SCR is replaced by an npn transistor, the tone can be switched on and off at will at the transistor base terminal.
Thursday, August 14, 2014
5 band graphic equalizer using a single IC
This schema uses a single chip, IC BA3812L for realizing a 5 band graphic equalizer for use in hi-fi audio systems.The BA3812L is a five-point graphic equalizer that has all the required functions integrated onto one IC. The IC is comprised of the five tone control diagram and input and output buffer amplifiers. The BA3812L features low distortion, low noise, and wide dynamic range, and is an ideal choice for Hi-Fi stereo applica-tions. It also has a wide operating voltage range (3.5V to 16V), which means that it can be adapted for use with most types of stereo equipment.
The five center frequencies are independently set using external capacitors, and as the output stage buffer amplifier and tone control section are independent diagram, fine control over a part of the frequency bandwidth is possible, By using two BA3812Ls, it is possible to construct a 10-point graphic equalizer. The amount of boost and cut can be set by external components. The recommended power supply is 8V, but the schema should work for a supply of 9V also. The maximum voltage limit is 16V. The schema given in the diagram operates around the five frequency bands: * 100Hz * 300Hz * 1kHz * 3kHz * 10kHz
Wednesday, August 13, 2014
LG G View LG cell G3 midrange at a lower price
The LG G Vista is officially announced with a 5.7 inch screen and exclusively on Verizon in the United States.
The new LG phone has a price of $ 99.99 with a two-year contract or 399.99 without a contract.
The Verizon and LG cell phone has a HD screen (720p) 5.7 inch QHD unlike (2K) 5.5 inch screen LG G3, making your images look grainier but not pixelated.
The LG G Vista has a quad-core 1.2GHz processor, 1.5GB of RAM, 3,200mAh battery, 8GB of storage with support for microSD card, 8 megapixel rear camera, 1.3 megapixel front camera and Android 4.4. 2 KitKat.
Clearly, the LG G Vista is not the cell range that most can have LG or Verizon, but can be a good option for those not wanting to spend money on a new phone and whose favorite operator Verizon.
Monday, August 11, 2014
Build a Schmitt Trigger Wiring diagram Schematic
This is a simple Schmitt Trigger Circuit Diagram. Schmitt trigger is a comparator schema with hysteresis, implemented by applying positive feedback to the non inverting input of a comparator or differential amplifier. It is an active schema which converts an analog input signal to a digital output signal. In this schema A 555 IC is shown configured to function as a Schmitt trigger. Inputs above and below the threshold level will turn the schema on and off producing a square wave output.
Schmitt Trigger Circuit Diagram
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