Showing posts with label diagram. Show all posts
Showing posts with label diagram. Show all posts
Friday, January 10, 2014
555 IC Timed Beeper Circuit Diagram
This is a simple timed beeper circuit diagram of beeper using 555 timer. This circuit can be employed to energize lights, horn, or other signaling device at any desired interval when the mercury switch is triggered. Since the current handling capability of mercury switch is not so high, an SCR is used to handle current drawn by the 555 timer circuit. Chose the SCR current rating of 500mA at minimum to safely drive the 555 IC and the relay. The relay is not needed when the current drawn by alarm is less than 200mA, in this case the alarm can be installed to directly replace the relay coil. Here is the schematic diagram of the circuit.
555-IC Timed Beeper Circuit Diagram
Thursday, January 9, 2014
Over voltage Protection Circuit Diagram
This is a Over voltage Protection Circuit Diagram. A silicon-controlled rectifier is installed in parallel with the 12-V line and connected to a normally-closed 12-V relay, K1. The SCRs gate circuit is used to sample the applied voltage. As long as the applied voltage stays below a given value, SCR1 remains off and Kls contacts remain closed, thereby supplying power to the load.
When the source voltage rises above 12 V, sufficient current is applied to the gate of SCR1 to trigger it into conduction. The trigger point of SCR1 is dependent on the setting of R1. Once SCR1 is triggered (activating the relay), K1s contacts open, halting current flow to the load.
Over voltage Protection Circuit Diagram
Friday, December 27, 2013
Under voltage Indicator for Battery Equipment Circuit Diagram
This is the simple Under voltage Indicator for Battery Equipment Circuit Diagram. Due to the low duty cycle of flashing LED, the average current drain is 1 mA or less. The NE555 will trigger the LED on when the monitored voltage falls to 12 volts.The ratio of Rl to R2 only needs to he changed if it is desired to change the voltage point at which the LED is triggered.
Under voltage Indicator for Battery Equipment Circuit Diagram
Friday, December 20, 2013
Build a Bridge Circuit Diagram With One Power Supply
This is simple Bridge Circuit Diagram With One Power Supply. For systems with only one power supply, two op amps act as instrumentation and buffer amps. The OPA111 AM buffers the reference mode of the bridge and applies that voltage to the instrumentation amps ref terminal. Output is taken between the amplifier outputs to exclude the fixed output offset.
The additional op amp creates a bridge error of 2, where IB=bias current of op amp and R is the resistance of one leg of the bridge.
Bridge Circuit Diagram With One Power Supply
Tuesday, October 8, 2013
POWER CONVERTER TOPOLOGY ELECTRONIC CIRCUIT DIAGRAM
POWER CONVERTER TOPOLOGY and MOSFET SELECTION FOR 48-V TELECOM APLICATIONS ELECTRONIC CIRCUIT DIAGRAM
Output voltages are frequently 5V and below with 3.3V probably the most common requirement, and 2.5V gaining in popularity. If a processor is on the card, voltages as low as 1.3V are not unlikely. One common approach is to regulate a distributed power bus, say the 5V rail, and then use non-isolated DC/DC converters to generate lower voltages. With the tendency away from 5V, the 3.3V rail is beginning to serve as the distributed bus, although, from the power supply designer’s perspective, this is not the most of desirable situations.
Fairchild has recently introduced a family of high voltage MOSFETs ranging from 80- to 200-V drain voltage specifications. This application note will provide information helpful in the proper selection of FETs for primary side switches – available in various types of 48V power converters.
Monday, October 7, 2013
1992 Regal Buick Wiring Diagram
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| 1992 Regal Buick Wiring Diagram |
The Part of 1992 Regal Buick Wiring Diagram: defrost, dimmer, coolant temp sens, cycling press,
primary cooling, blower, secondary cooling fan, rear defog, heater ctrl assembly, convenience center, select center, clust fuse, electronic ctrl module, throttle sensor, fusible element, solenoid, cluth diode, comp ctrl relay, air temp valve motor
primary cooling, blower, secondary cooling fan, rear defog, heater ctrl assembly, convenience center, select center, clust fuse, electronic ctrl module, throttle sensor, fusible element, solenoid, cluth diode, comp ctrl relay, air temp valve motor
Saturday, September 21, 2013
1999 Chevrolet Chevy Tahoe Wiring Diagram
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| 1999 Chevrolet Chevy Tahoe Wiring Diagram |
The Part of 1999 Chevrolet Chevy Tahoe Wiring Diagram: power distribution cell, gauges, link
connector, diesel, fuse block, steering ctrl, vehicle, engine ctrl, powertrain ctrl module, steering wheel position signal, case ctrl, passlock sensor, scurity lamp, instrument cluster, passlock module, black wire, cylinder, hall effect, magnet
connector, diesel, fuse block, steering ctrl, vehicle, engine ctrl, powertrain ctrl module, steering wheel position signal, case ctrl, passlock sensor, scurity lamp, instrument cluster, passlock module, black wire, cylinder, hall effect, magnet
Friday, September 20, 2013
1978 Ford F 150 Lariat Wiring Diagram
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| 1978 Ford F-150 Lariat Wiring Diagram |
The Part of 1978 Ford F-150 Lariat Wiring Diagram: direct switch, marker light, battery, headlight, light
switch, high beam, indicator, horn relay, yellow wire, green wire, fusible link, starter relay, ignition coil, park light, distributor, ignition module, noise filter, cluth safety switch, alternator indicator, backup light, widshield wiper switch, washer motor, regulator
switch, high beam, indicator, horn relay, yellow wire, green wire, fusible link, starter relay, ignition coil, park light, distributor, ignition module, noise filter, cluth safety switch, alternator indicator, backup light, widshield wiper switch, washer motor, regulator
Wednesday, September 11, 2013
Build a Telephone Record Control Circuit Diagram
This simple Telephone Record Control Circuit Diagram will allow you to connect any tape recorder that has a mic and remote input to a phone line and automatically record both sides of a conversation when ever the phone is in use. You will need to take a couple of voltage readings before connecting the circuit. First determine the polarity of your phone line and connect it to the circuit as shown and then determine the polarity of the remote input and connect it to the circuit.
Circuit operation is as follows. When the phone is on hook the voltage across the phone line is about 48volts dc. When the phone is off hook the voltage will drop to below 10volts dc. When the line voltage is at 48volts the FET is off which causes Q2 and Q3 to be off. When the phone is picked up the FET turns on along with Q2 and Q3 which turns your recorder on. The tape recorder must be in the record mode at all times. As you can see the power source for the circuit is the phone line.
Circuit operation is as follows. When the phone is on hook the voltage across the phone line is about 48volts dc. When the phone is off hook the voltage will drop to below 10volts dc. When the line voltage is at 48volts the FET is off which causes Q2 and Q3 to be off. When the phone is picked up the FET turns on along with Q2 and Q3 which turns your recorder on. The tape recorder must be in the record mode at all times. As you can see the power source for the circuit is the phone line.
Telephone Record Control Circuit Diagram
Monday, May 27, 2013
Wiring Diagram Home Networkssecurity Systems Phone
Cat5e Wiring Standards Any Product Technical Queries.
Cat5e Ethernet Cable Connection Between The Dsl Modem And The Netgear.
Cat 5e 6 Wiring Diagram.
An Ethernet And Phone Jack Using A Single Cat5e Cable Mavromatic.
Cat 5 Wiring Diagram For Home Networks Security Systems And Phone.
Curt S Cat5 Wiring Diagram.
Cat5e Wiring.
Wiring Diagram For Rj 45 Cat5e Cable I T On The Go Inc Computer.
Palmetto Networks A Professional Technology Company.
How To Make A Cat5e Network Cable Miscellaneous Items.
Sunday, May 5, 2013
Lights Control for Model Cars Circuit Diagram
The author gave his partner a radio controlled (RC) model car as a gif t. She found it a lot of fun, but thought that adding realistic lights would be a definite improvement. So the author went back to his shed, plugged in his soldering iron, and set to work equipping the car with realistic indicators, headlights, tail lights and brake lights.
Lights Control for Model Cars Circuit Diagram
The basic idea was to tap into the signal from the radio control receiver and, with a bit of help from a microcontroller, simulate indicators using flashing yellow LEDs and brake lights using red LEDs. Further red LEDs are used for the tail lights, and white LEDs for the headlights. Connectors JP4 and JP5 (channel 0) are wired in parallel, as are JP6 and JP7 (channel 1), allowing the circuit to be inserted into the servo control cables for the steering and drive motor respectively. The ATtiny45 micro-controller takes power from the radio receiver via diode D1. T1 and T2 buffer the servo signals to protect IC1’s inputs from damage.
IC1 analyses the PWM servo signals and gen-erates suitable outputs to switch the LEDs via the driver transistors. T3 drives the two left indicators (yellow), T4 the two right indica-tors, and T5 the brake LEDs (red). The red tail lights (JP2-8 and JP2-8) and the white head-lights (JP2-9 and JP2-10) are lit continuously. The brake lights are driven with a full 20 mA, so that they are noticeably brighter than the tail lights, which only receive 5 mA. If you wish to combine the functions of tail light and brake light, saving t wo red LEDs, sim-ply connect pin 10 of JP2 to pin 14 and pin 12 to pin 16. Then connect the two combined brake/tail LEDs either at JP2-5 and JP2-6 or at JP2-7 and JP2-8.
JP3 is provided to allow the use of a separate lighting supply. This can either be connected to an additional four-cell battery pack or to the main supply for the drive motor. The val-ues given for resistors R8 to R17 are suitable for use with a 4.8 V supply. JP2 can take the form of a 2x10 header.
As usual the sof t ware is available as a free download from the Elektor web pages accom-panying this article[1], and ready-programmed microcontrollers are also available. The microcontroller must be taught what servo signals correspond to left and right turns, and to full throttle and full braking. First connect the fin-ished circuit to the radio control electronics in the car, making sure everything is switched of f. Fit jumper JP1 to enable configuration mode, switch on the radio control transmit-ter, set all proportional controls to their cen-tre positions, and then switch on the receiver. The indicator LEDs should first flash on both sides. Then the car will indicate left for 3 s: during this time quickly turn the steering on the radio control transmitter fully to the left and the throt tle to full reverse (maximum braking).
Hold the controls in this position until the car starts to indicate right. Then set the controls to their opposite extremes and hold them there until both sides flash again. Now, if the car has an internal combustion engine (and so cannot go in reverse), keep the throttle control on full; if the car has an electric motor, set the throttle to full reverse. Hold this position while both sides are flashing. Configuration is now complete and JP1 can be removed. If you make a mistake during the configuration process, start again from the beginning.
JP3 is provided to allow the use of a separate lighting supply. This can either be connected to an additional four-cell battery pack or to the main supply for the drive motor. The val-ues given for resistors R8 to R17 are suitable for use with a 4.8 V supply. JP2 can take the form of a 2x10 header.
As usual the sof t ware is available as a free download from the Elektor web pages accom-panying this article[1], and ready-programmed microcontrollers are also available. The microcontroller must be taught what servo signals correspond to left and right turns, and to full throttle and full braking. First connect the fin-ished circuit to the radio control electronics in the car, making sure everything is switched of f. Fit jumper JP1 to enable configuration mode, switch on the radio control transmit-ter, set all proportional controls to their cen-tre positions, and then switch on the receiver. The indicator LEDs should first flash on both sides. Then the car will indicate left for 3 s: during this time quickly turn the steering on the radio control transmitter fully to the left and the throt tle to full reverse (maximum braking).
Hold the controls in this position until the car starts to indicate right. Then set the controls to their opposite extremes and hold them there until both sides flash again. Now, if the car has an internal combustion engine (and so cannot go in reverse), keep the throttle control on full; if the car has an electric motor, set the throttle to full reverse. Hold this position while both sides are flashing. Configuration is now complete and JP1 can be removed. If you make a mistake during the configuration process, start again from the beginning.
Author: Manfred Stratmann - Copyright : Elektor
Saturday, April 13, 2013
Simple Mobile Phone Jammer Circuit Diagram
Description
Circuit displaying a cell phone jammer.Here i have used a fm transistor for making this circuit.Mobile cellphones are working in 450 MHz frequency .Here the transmitter generate virtually equal to 450 MHz frequency there for the mobile telephone does not determine the original signal however the sign range may be very week so this circuit working in most effective 100 m range .This circuit working in handiest 450 Mhz .Do now not supply extra than three V
![](\"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiUfWNlDt1J8p_E7L9X4D7VeCfs22wIxa5_biKIep-oIiBsIRgSP4h0Gh_RA9TExxIwbUUvkNxyuqqg6gXwQnCTjvU-XMP8LAvTh-IKWAV-19o04yj39k7IoXxbeDqlFcwfhUAyCSVeZr6-/s1600/Simple+Mobile+Phone+Jammer+Circuit+Diagram+1.jpg\")
Part List
Circuit displaying a cell phone jammer.Here i have used a fm transistor for making this circuit.Mobile cellphones are working in 450 MHz frequency .Here the transmitter generate virtually equal to 450 MHz frequency there for the mobile telephone does not determine the original signal however the sign range may be very week so this circuit working in most effective 100 m range .This circuit working in handiest 450 Mhz .Do now not supply extra than three V
Part List
| Component No: | Value | Usage |
| R1 | 100R | Emitter loading |
| R2 | 39k | Base Biasing |
| C1 | 15 pf | Frequency Generating |
| C2 | 4.7pf | Feedback |
| C3 | 4.7pf | Feedback |
| C4 | 102pf | Noise Reduce |
| C5 | 1MF | Coupling |
| C6 | 2.2pf | Coupling |
| C7 | 103pf | Decoupling |
| Q1 | BF 494 | Amplification |
| L1 | 22nH | Frequency Generating |
Applications
* FM Transmission
* TV Transmission
* Remote Controlled Toy
Friday, April 12, 2013
1985 Chevrolet El Camino v8 Wiring Diagram
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| 1985 Chevrolet El Camino v8 Wiring Diagram |
The Part of 1985 Chevrolet El Camino v8 Wiring Diagram: constant, coolant, distributor module,
vaccum sensor, redundant ground, engine block, speed trans, lamp driver, solenoid, throttle kiccker, air switch
vaccum sensor, redundant ground, engine block, speed trans, lamp driver, solenoid, throttle kiccker, air switch
Tuesday, April 9, 2013
Dark Sensitive Power Switch Circuit Diagram Using LDR
Description
Circuit showing a Dark Sensitive Power Switch .Here we have used a ldr and a ordinary transistor for making this circuit
.Connect any 230 volt equipment at the load .You need a 9 volt power supply
Components Required
Resistor
10 k , 680 R
Transistor
BC 548
Diode
IN 4007
Relay
LDR
Circuit showing a Dark Sensitive Power Switch .Here we have used a ldr and a ordinary transistor for making this circuit
.Connect any 230 volt equipment at the load .You need a 9 volt power supply
Components Required
Resistor
10 k , 680 R
Transistor
BC 548
Diode
IN 4007
Relay
LDR
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