Various diagram: ac

Monday, October 20, 2014

Simle DC to AC Inverter by IC 555

This be basic AC inverter Circuit. Convenient for the initiator who have to is extremely fond of something experience. Because of use IC 555 highly popular, perform produce the frequency ,then enlarge with transistor NPN and PNP number TIP41 and TIP42 drive the coil transformer. Get by can pay Voltage output about 120V to 230V at frequency 50Hz. By have R4 perform control the frequency and should use. Voltage supply about 5V to 15V the detail sees in circuit picture sir. Link

Saturday, October 18, 2014

Build a Varying Brightness AC Lamp Circuit

Varying Brightness AC Lamp Circuit, an SCR is used to slowly vary the intensity of a 120 volt light bulb by controlling the time that the AC line voltage is applied to the lamp during each half cycle.

Varying Brightness AC Lamp Circuit Diagram

Build a Varying Brightness AC Lamp Circuit

Caution:
The circuit is directly connected to the AC power line and should be placed inside an enclosure that will prevent direct contact with any of the components. To avoid electrical shock, do not touch any part of the circuit while it is connected to the AC power line. A 2K, 10 watt power resistor is used to drop the line voltage down to 9 volts DC. This resistor will dissipate about 7 watts and needs some ventilation.

Operation:
A couple NPN transistors are used to detect the beginning of each half cycle and trigger a delay timer which in turn triggers the SCR at the end of the delay time. The delay time is established by a current source which is controlled by a 4017 decade counter. The first count (pin 3) sets the current to a minimum which corresponds to about 7 milliseconds of delay, or most of the half cycle time so that the lamp is almost off. Full brightness is obtained on the sixth count (pin 1) which is not connected so that the current will be maximum and provide a minimum delay and trigger the SCR near the beginning of the cycle. The remaining 8 counts increment the brightness 4 steps up and 4 steps down between maximum and minimum. Each step up or down provides about twice or half the power, so that the intensity appears to change linearly. The brightness of each step can be adjusted with the 4 resistors (4.3K, 4.7K, 5.6K, 7.5K) connected to the counter outputs.

The circuit has been built by Don Warkentien (WODEW) who suggsted adding a small 47uF capacitor from ground to the junction of the current source transistor (PNP) to reduce the digital stepping effect so the lamp will brighten and fade in a smoother fashion. The value of this capacitor will depend on the 4017 counting rate, a faster rate would require a smaller capacitor.

Monday, September 8, 2014

2 Way Remote Ac Switch Hookup Wiring diagram Schematic

Once it is connected to your network, the remote access via the App is a nice feature.. This switching arrangement is the type of arrangement used in both domestic and industrial environments to allow a light or other ac-operated device to be controlled from more than one location.

2 Way Remote Ac Switch Hookup Circuit Diagram

Wednesday, September 3, 2014

230 Volt AC To Inverter Switching Wiring diagram Schematic

Description

Before three weeks i am introduced inverter schema diagram but the schema not included ac to inverter switching part so today i introducing a 230 Volt Ac to inverer switching schema diagram .

Circuit showing a inverter switching . Here i have used bc 558 ,BC 548 and a relay for making this schema . 230 volt connected to the base of the transistor Q1.When the power is ON positive volt coming to the base of the transistor so the relay schema is open and load working in 230 V AC .When the power is OFF ground voltage coming to the base of the transistor so the Base of the Q2 is positive there for the relay schema closed and load working in inverter input .Part list and applications are showing below.

Part List

Component No:	Value	Usage
R1	100KΩ	Emitter Load
R2	10K Ω	Base Biasing
R3	180KΩ	Current Limiting
Q1	BC558	Switching
Q2	BC548	Switching
D1	IN4007	Relay Balancing
RL1	12 V	Inverter Switching

Monday, September 1, 2014

230 Volt AC To Inverter Switching Wiring diagram Schematic

Circuit showing a inverter switching . Here i have used bc 558 ,BC 548 and a relay for making this schema . 230 volt connected to the base of the transistor Q1.When the power is ON positive volt coming to the base of the transistor so the relay schema is open and load working in 230 V AC .When the power is OFF ground voltage coming to the base of the transistor so the Base of the Q2 is positive there for the relay schema closed and load working in inverter input .Part list and applications are showing below. Link

Part List

Component No:	Value	Usage
R1	100KΩ	Emitter Load
R2	10K Ω	Base Biasing
R3	180KΩ	Current Limiting
Q1	BC558	Switching
Q2	BC548	Switching
D1	IN4007	Relay Balancing
RL1	12 V	Inverter Switching

Saturday, August 30, 2014

AC powered LED Indicator

This is an indicator you can use this schema with your Ac electronic items.Here I have used normal Led.Attach purple color connections to the AC line.I suppose this will be a wonderful schema for you.

Note

# This is not a good schema for kids Because here we use 230V So dont try to build this.

# Build this schema on a PCB

Friday, August 29, 2014

555 DC to AC inverter circuit diagram

This is inverter schema diagram.Here I have used famous Transistors TIP41 and TIP42.And the frequency is generated by NE555.By using R4 you can control the frequency.out put voltage is 120V-230V.the frequency is 50Hz.This schema operates with 5V-15V.

Note

# Be careful because you are dealing with 230V.

#This schema is not suitable for kids.

#Use heat sinks for transistors