Showing posts with label AC. Show all posts
Showing posts with label AC. Show all posts
Thursday, November 13, 2014
3000 watt power inverter 12V DC to 230V AC
Circuit Diagram | 3000 watt power inverter 12V DC to 230V AC
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| Circuit Diagram of 3000 watt power inverter 12V DC to 230V AC |
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| Fig. 2: Sine-wave voltage and conventional square wave voltage with both 230 Volt rms |
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| Fig. 3: Square wave voltage with duty cycle 25% for 230 Volt rms ("modified sine") |
PCB Layout:3000 watt power inverter
Component Placement: 3000 watt power inverter
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| fig.: output voltage with no load or inductive load. |
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| fig.: resistor 0,001 Ohm made of high-grade steel sheet metal |
Control electronics |12V DC to 230V AC
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| fig.: control electronics on strip hole plate (previous version) and PCB of the "professional edition" |
Assembly of the mosfet-transistors on the heat sink | 3000 watt power inverter
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| fig.: heat sink, mosfet transistors, connections. |
Final assembly | 3000 watt power inverter 12V DC to 230V AC
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| fig.: 1500 VA inverter with 2 parallel transformers and 1000 VA inverter |
Source:http://www.qsl.net
Saturday, November 8, 2014
AC Mains Bistable Switch
This AC mains-operated bistable switch turns on or turns off a device using a miniature neon lamp and a few discrete components. This switch can be used for control pan-els, appliances and lighting controls. A push-to-on switch is used to light up the neon lamp. The light emit-ted by the neon lamp, in turn, enables the switching action of the circuit. Use of a 555 timer wired for bistable operation makes the circuit act as a bistable switch.
Circuit diagram :
AC Mains Bistable Switch Circuit Diagram
The neon lamp (NL1) and the push-to-on switch (S1) are directly connected to 230V AC mains. The 12V DC supply for timer 555 (IC1) is derived from 230V AC mains through capacitive dropper C1, resistor R1 and a 12V zener diode. IC1 works as a flip-flop circuit, with the signal at its output pin 3 toggling every time it receives a pulse at its pins 2 and 6.
The operation of the circuit is simple. When you press switch S1 momentarily, the neon lamp glows, making phototransistor T1 conduct to provide a pulse at pins 2 and 6 of IC1. When switch S1 is pressed, the output of IC1 goes high and LED1 glows. Pressing S1 again makes the output of IC1 low and LED1 stops glowing.
In place of LED1, you can use an optodiac or suitable relay (not shown in the circuit) along with a suitable driver circuit to drive AC loads. Assemble the circuit on a general-purpose PCB with the neon lamp and the phototransistor housed in a small black tube isolated from the external light source, and enclose in a suitable cabinet. Fix switch S1 on the front panel of the cabinet, and mains power cord at the rear. At the rear, also fix a 3-pin socket to connect the AC load.
Caution. Take care when operating this circuit as it is directly connected to 230V AC mains. Better still, don’t attempt this circuit if you have no experience in handling high-voltage circuits.
Thursday, October 23, 2014
12VDC to 220V AC 500W Inverter Circuit
Circuit Inverter 500 Watt 12VDC to 220VAC is made using a transistor.
The basiccally of the circuit Inverter 12VDC to 220VAC 500 Watt This is a configuration of 2 pieces of transistors Q1 and Q2 which form a series of Flip-Flop. The output of the flip-flop Q1 and Q2 in the circuit Inverter 12VDC to 220VAC 500 Watt is then broken down for each pulse to complement each other using a series compiled by Q3 and Q4. Output which complement each other is then given to the driver transistors Q5 and Q6 form the transistor 2SC1061. Series Inverter Power Inverter from 12VDC to 220VAC 500 Watt This is a series of parallel transistors Q7 and Q8 are prepared and Q7x and Q8x the form of power with a type 2N3055 transistor 10 pieces. drawing a complete range of circuit Inverter 12VDC to 220VAC 500 Watts can be seen as follows.
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