When the engine rpm becomes higher, the generated voltage of the generator also becomes higher and the voltage between the battery terminals becomes high accordingly. When it reaches the adjusted voltage of the integrated circuit and it is turned “ON”, a signal will be sent to the SCR (thyristor) gate probe and the SCR will be turned “ON”. Then the SCR becomes conductive in the direction from point A to point B. At this time the current generated from the generator gets through the SCR without charging the battery and returns to generator again.
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Showing posts with label system. Show all posts
Showing posts with label system. Show all posts
Tuesday, November 11, 2014
Thursday, September 25, 2014
- A ninth reed contact is Htted at the end of the block, to enable turning off the indication for the relevant length of the track. The circuit is composed of 8 set-reset (S-R) bistables, which drive a LED each.
- This section indication system may be a just the thing you have been looking for when you own a fairly large model railway with tunnels and tracks at several levels, and are sometimes at a loss find the where abouts of a particular train.
- The reed contacts are actuated with the aid of a small magnet fitted to the underside of the engine. Depending on the most suitable location of the magnet, T the reed contacts are fitted in between the tracks or along- side the left or right hand rail. Several of these section indication systems may be fitted in series to enable making a con- trol panel with many lights to indicate the train positions. Observing the direction of travel of the trains, section junctions are fitted with S9 (end of previous section) and S1 (begin I of section) located next to each other.
- This circuit uses LEDs to indicate the train’s position. Each track block is split up into 8 sections, whose starting points are marked with reed contacts (Si-S8).
- All SET inputs are combined in a NOR gate, N1, which drives a pulse shaper and buffer to reset the bistables with a brief pulse to ensure that only the LED for the last passed track section is lit.

Thursday, September 18, 2014
Today Im going to give you a wonderful schema diagram.Most of you ask about police car light systems.So I thought to give you a police car light system schema diagram.Here I have used two ICs one is IN4017 and the other one is 40106.Here I have used only blue colour LEDs If you like to add any other colour you can add them.I think after adding this schema for your car you can attract others.

# Build this schema on a P.C.B
# Dont use more than 6V Read More
Note
# Dont use more than 6V Read More
Monday, September 15, 2014
This is a security schema diagram.If someone cross the LED beem.The schema will be activated.Here I have used red LED insted of the LED you can use Lazer beem too.You can connect a light or 230V alarm for this schema.but dont pass 500W.If you want more bulbs you can attach them parallely.

Parts
Q1___________BC327 45V 800mA PNP Transistor
Q2___________BC337 45V 800mA NPN Transistor
C1_____________10nF 63V Polyester Capacitor
D1_________TIC106D 400V 5A SCR
D2-D5_______1N4007 1000V 1A Diodes
R1_____________Photo resistor (any type)
R2____________100K 1W Resistor
R3____________200K 1/2W Trimmer Cermet
R4,R7_________470R 1/4W Resistors
R5_____________12K 1/4W Resistor
R6______________1K 1/4W Resistor
SK1__________Female Mains socket
PL1__________Male Mains plug & cable
Note
# PL1 can be omitted and the input mains supply wires connected in parallel to any switch controlling lamps. In this case, if the switch is left open, the schema will be able to drive the lamps; if the switch is closed, the lamps will illuminate and the schema will be by-passed.
# When ths schema operates dont touch the parts
# Due to 230 This is not suitable for kids.
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Parts
Q1___________BC327 45V 800mA PNP Transistor
Q2___________BC337 45V 800mA NPN Transistor
C1_____________10nF 63V Polyester Capacitor
D1_________TIC106D 400V 5A SCR
D2-D5_______1N4007 1000V 1A Diodes
R1_____________Photo resistor (any type)
R2____________100K 1W Resistor
R3____________200K 1/2W Trimmer Cermet
R4,R7_________470R 1/4W Resistors
R5_____________12K 1/4W Resistor
R6______________1K 1/4W Resistor
SK1__________Female Mains socket
PL1__________Male Mains plug & cable
Note
# PL1 can be omitted and the input mains supply wires connected in parallel to any switch controlling lamps. In this case, if the switch is left open, the schema will be able to drive the lamps; if the switch is closed, the lamps will illuminate and the schema will be by-passed.
# When ths schema operates dont touch the parts
# Due to 230 This is not suitable for kids.
Read More
Tuesday, September 9, 2014
The Fiber optic the 3rd generation technology introduce by “John Tyndall” is based on the total internal reflection principle, in Fiber optics the light waves are propagated in zigzag manner, the fiber is made from pure glass (silica) or The giving Project is based on the basic concept of the Fiber Optic Technology, In the Given project we try to Explain that, how the Optical Fiber works, Our project consist on three basic parts, Optical Transmitter, Optical Receiver and Transmission Line (Fiber Optics),
Optical Transmitter
The Optical transmitter basically consist on power supply, input signal and drive schema, the optical transmitter produce the visible light (Red) and this light is then transmitted through the fiber optic,
Optical Receiver
The optical receivers receives the transmitted optical signal from the fiber optic, and convert it again to electrical signal,
Fiber Optic
The fiber optic cable is a transmission line used for the light propagated.
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