555 Timer Oscillator

555 Timer Oscillator

A voltage-controlled oscillator (VCO) using the timer 555 is shown in figure.

 

The circuit is sometimes called a voltage-to-frequency converter because the output frequency can be changed by changing the input voltage.

As discussed in previous blog posts, pin 5 terminal is voltage control terminal and its function is  to control the threshold and trigger levels. Normally, the control voltage is ++2/3V_CC because of the internal voltage divider. However, an external voltage can be applied to this terminal directly or through a pot, as illustrated in figure, and by adjusting the pot, control voltage can be varied. Voltage across the timing capacitor is depicted in figure, which varies between +V_control and ½ V_control. If control voltage is increased, the capacitor takes a longer to charge and discharge; the frequency, therefore, decreases. Thus the fre­quency can be changed by changing the control volt­age. Incidentally, the control voltage may be made available through a pot, or it may be output of a transistor circuit, op-amp, or some other device.

Thank you

 

12v Regulator Schematic (15A)

12v Regulator Schematic (15A)

 Well I dont know much about electronics so I asked a friend of mine to make me a 12v regulator. Please do not ask me about it since I have no idea about those kind of things. However, I wasn't able to find a decent schematic of a 12v regulator so here it is. The Voltage on the car must be over 12.8 to supply a regulated 12V but the nice thing is that it is 15A and with a fuse can be lowered to 5A. He said that the components are cheap and not hard to find. He uses a so called "zener" which I havent got any idea what it is!

I am interested in your comments since you know more about this stuff. I know this isnt the BEST regulator available but it is a simple solution that I wanted to find and never did. Hope that it will be usefull to you all.

or

 Thank you

 

 

LAMPU LED ORCA

LAMPU LED ORCA

Lampu LED ORCA Lampu LED Bertenaga Tinggi yang Hemat Energi...
Lampu LED ORCA, dengan cara pasang yang mudah, merupakan produk lampu generasi baru. Lampu ini cocok digunakan untuk penerangan dirumah - rumah, perkantoran, hotel, rumah sakit, dan berbagai tempat umum lainnya.
Lampu ini merupakan lampu yang paling ramah lingkungan, bebas merkuri, hemat energi, memiliki tingkat panas yang rendah dan lebih tahan lama.
Lampu ini juga memiliki tingkat e siensi hingga 90%, sedangkan lampu pijar menghabiskan energi hingga 98% untuk menghasilkan cahaya yang menimbulkan panas.
Selain lebih ramah lingkungan dan e sien, lampu ini memiliki biaya energi 10x lebih ekonomis jika dibandingkan dengan lampu pijar.
Tersedia dalam dua pilihan tipe lampu, LED Bulb dan LED Tube

Mengapa LED ?

1. Hemat biaya mencapai 50%

2. Ramah lingkungan, karena tidak    mengandung mercury

3. Ikut menyelamatkan dunia dari Global Warming

4. Memiliki tingkat panas yang rendah

5. Tahan lama karena usia pemakaian sampai dengan 30.000-50.000 jam

Mengapa ORCA ?

1. Bergaransi 2 tahun (1 to 1 replacement)

2. Mudah pemasangannya

3. Memiliki kualitas material yang bagus: fiber yg anti pecah,

   holder dari aluminium

4.Tingkat keakuratan watt mendekati dengan yang sebenarnya

5.Tidak flicker

6.Kualitas warna lampu ORCA yang bagus

LED BULB

* Dirancang sebagai pengganti lampu pijar   dan lampu

konvensional lainnya, dengan Lumen cahaya yang

tinggi, efisien, awet dan ramah lingkungan.

* Tersedia dalam 2 pilihan cahaya : Cool White dan Warm

White, dengan 4 variasi daya listrik : 5W, 7W, 9W & 12W

Untuk informasi lebih lanjut dan detail

Silahkan hubungi  :

   

08122709992  (Ari)

  

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VIZIO E291-A1 29-inch 720p 60Hz Razor LED HDTV

List Price: $269.99 Price: $257.03 This item qualifies for the TV Low Price Guarantee, and Free Super Saver Shipping. Details You Save: $12.96 (5%)

In Stock. Ships from and sold by Amazon.com.

Product Features

Size: 29 Inches

• Razor LED for richer colors and more vivid details
• Slim frame design with ultra thin profile beautifully enhances any living space
• TV without stand (Width x Height x Depth): 26.42-Inch x 16.75-Inch x 1.97-Inch, TV with stand (Width x Height x Depth): 26.42-Inch x 16.75-Inch x 8.12-Inch
• 720p HD resolution for a clear, lifelike image
• SRS Studio Sound HD delivers crisp, clear audio

Product Specifications

Size: 29 Inches

Brand NameVizio

Specification MetEnergy Star

Speaker TypeBuilt-in

Technical Details

Size: 29 Inches

• Brand Name: Vizio
• Model: E291-A1
• Display Technology: LED-lit
• Display Size: 29 inches
• Image Aspect Ratio: 16:09

›  See more technical details 

Product Description

Size: 29 Inches

Introducing the new E-series slim frame design. The VIZIO 29-Inch Class Razor LED TV is shattering the mold in a way only VIZIO can, with high-quality design and picture at the best value. Enjoy richer colors and more vivid details with LED technology. A slim frame design with ultra thin profile makes this a stunning centerpiece in any living space. Plus, this Razor LED HDTV is more energy efficient than a conventional LCD TV, to save you even more money.  

 

 

VIZIO E601i-A3 60-Inch 1080p 120Hz LED HDTV

Price: $999.99 This item qualifies for 2% back in Rewards, the TV Low Price Guarantee, Free Shipping, and Enhanced Delivery. Details 

Product Features

• VIZIO Internet Apps® ? Instantly enjoy online movies, TV shows, music, apps and more
• LED technology for richer colors and more vivid details
• Slim frame design with ultra thin profile beautifully enhances any living space
• 1080p Full HD resolution for a crystal-clear picture
• Built-in WiFi for easy internet access

 

Product Description

From the Manufacturer

Presenting The New VIZIO E-Series LED HDTV

Now with a Slim Frame Design

This holiday season, go big with VIZIO! The E-Series 60” Class Razor LED Smart TV is shattering the mold in a way only VIZIO can, with high-quality design and picture at the best value. Enjoy crystal-clear action and eye-popping images in 1080p Full HD resolution with 120Hz refresh rate with smooth motion.
A slim frame design with an ultra thin profile makes this a stunning entertainment centerpiece in any living space. VIZIO Internet Apps with built-in Wi-Fi gives you instant access to a world of streaming movies, TV shows, music, and more – all at the push of a button on the smart remote with keyboard. This 60" Class LED Smart TV gives you more of what you love about TV with all the brilliant picture quality and world-class support you’d expect from America’s LCD HDTV Company.

SMART TV

VIZIO Internet Apps with built-in Wi-Fi is your passport to a world of entertainment, movies, TV shows and more. All on your schedule, directly to your HDTV.

Full Keyboard Remote

This powerful smart remote features a built-in keyboard that puts the freedom to text friends, play games or search apps right in your hands.

RAZOR LED Brilliance

With LED backlighting, every detail pops with rich color and vivid details. And thanks to its HD 1080p resolution and 120Hz refresh rate, every scene is crisp and sharp.

Slim Frame + Ultra Thin Design

The slim frame design with ultra thin profile beautifully enhances any living space.

Technical Specs

Video
Screen Size:	60” Class
Diagonal Viewable:	60.04”
Backlight Type:	Razor LED
Resolution:	1920 x 1080 (1080p)
Colors:	1.07 Billion (10-bits)
Dynamic Contrast Ratio:	1,000,000:1
Refresh Rate:	120Hz with smooth motion
Response Time:	4ms
Viewable Angle (H/V):	176˙/176˙
OSD Language:	English, Spanish, French

Audio
SRS StudioSound:	Yes
SRS TruSurround HD:	Yes
SRS TruVolume:	Yes
Speakers/Power Output:	2 x 10W

Connections - Inputs
HDMI:	2 (side), 2 (down)
Component:	1 (side)
Composite:	1 (shared with component)
PC:	1 VGA (down)
RF Connector for Internal Tuner:	1 (down)
Ethernet:	1 (down)
USB 2.0:	2 (side)

Connections - Outputs
Digital Audio Out (SPDIF):	1 (down)
Analog Audio Out:	1 (RCA) (down)

Multimedia Support
Music:	Yes
Photo:	Yes
Video:	Yes
DLNA:	Yes

Power Ratings
Power Consumption:	83.46W
Standby Power Consumption:	<1w td="td">
Energy Compliance:	ENERGY STAR 5.3

Additional Features
VIA (VIZIO Internet Apps):	Yes
Smart Dimming:	No
Smooth Motion:	Yes
Ambient Light Sensor:	Yes
WiFi:	802.11n
Bluetooth:	N/A
HDMI CEC:	Yes
HDMI ARC:	Yes
PIP (Picture in Picture):	No
Mercury Free:	Yes
Remote Control:	Enhanced 2-sided remote with keyboard
Certifications:	UL, CUL, FCC Class B, HDMI 1.4 incl. CEC/ARC, Vizio AQ, Vizio PQ, Dolby Digital Plus
Compliance:	ENERGY STAR 5.3, ATSC Spec A/65, EIA/CEA-766-A, California Energy Commission Auto Shut Down

Weight
Gross:	73.19 lbs
Net With Stand:	61.73 lbs
Without Stand:	54.45 lbs

Dimensions
With Stand:	54.13”W x 33.51”H x 11.02”D
Without Stand:	54.13”W x 31.68”H x 1.94”D
Packaging Dimensions:	57.91”W x 36.42”H x 7.05”D

Wall Mount Specifications
Hole Pattern:	400mm x 400mm
Screw Size:	M6
Screw Length:	10mm
Screw Pitch:	1mm

VIZIO Warranty
One Year Parts & Labor; Free Lifetime Technical Support

* When compared to same size 2012 LCD HDTVs lighted with CCFL technology.
**Images shown are for comparative and illustrative purposes only. Actual measurements may vary based on models.

Product Description

This season, go big with VIZIO! The E-Series 60” Class LED Smart TV is shattering the mold in a way only VIZIO can, with high-quality design and picture at the best value. Enjoy crystal-clear action and eye-popping images in 1080p Full HD resolution with 120Hz refresh rate with smooth motion. A slim frame design with ultra thin profile makes this a stunning entertainment centerpiece in any living space. VIZIO Internet Apps® with built-in Wi-Fi gives you instant access to a world of streaming movies, TV shows, music, and more – all at the push of a button on the smart remote with keyboard. This 60" Class LED Smart TV gives you more of what you love about TV with all the brilliant picture quality and world-class you’d expect from America’s #1 LCD HDTV Company. Ranked “Highest in Customer Satisfaction with HDTVs” by JD Power.