60Hz-power-inverter

  
Capacitor C5 and potentiometer R12 determine the frequency of the output signal at pin 3 of IC1, the 555 oscillator. The output signal is differentiated by C3 and C4 before it`s input to the base of power transistors Q1 and Q2 via diodes D1 and D2, respectively. The signal from !C1 is adjusted to 120Hz, because the flip-flop formed by transistors Q3 and Q4.divides the frequency by 2.
60Hz-power-inverter - schematic

When Q3 is on, the base of Q1 is connected via R1 to the regulated 12-V supply. Then, when the flipflop changes states, Q4 is turned on and the base of Q2 connected to the 12-V supply through R2. The 100 mA base current allowsQ1 and Q2 to alternately conduct through their respective halves to the transformer`s secondary winding. To eliminate switching transients caused by the rapid switching of Q3 and Q4, capacitors C1 and C2 filter the inputs to the base of Q1 and Q2 respectively. Power for the unit comes from an automobile`s 12V system or from a storage battery. The power is regulated by IC2, a 7812 regulator. LED1, connected across the 12-V input, can be used to indicate whether power is being fed to the circuit. The neon pilot lamp, LMP1, shows a presence or absence of output power.



Recommended videos


  • Make an inverter : DIY Experiments #2 - Power AC devices with a battery / homemade inverter
    Duration: 6:26.
  • how to dc power inverter 12v battery to 220v
    Duration: 16:46.
  • AC Circuits, Transformerless Power Supplies,
     

News


  • The Cerbat Gem
    The Cerbat Gem Cree logo Cree, Inc. (NASDAQ:CREE) announced its earnings results on Tuesday. The LED producer reported ($0.11) earnings per share for the quarter, missing the Thomson Reuters' consensus estimate of $0.09 by $0.20. The firm ear
     27 April 2017
  • Flyback transformer optimised for industrial applications
    Electropages (blog)
    Electropages (blog) Used in conjunction with Avago's chipset, the device is suitable for a wide range of industrial applications including , uninterruptible and switch-mode , automation systems, DC-DC converters, renewable energy , and AC
     27 April 2017
  • Utilities-ME.com
    Utilities-ME.com The released solutions can lead to energy efficiencies of up to 98% for telecom power, solar PV and uninterruptible (UPS). The company has also released its building management and control system (BMCS), an intelligent plat
     27 April 2017
  • MENAFN.COM
    The new and improved ECI technology offers bi-directionality and multi-directionality on every converter, inging a new dimension to modular and uninterruptible (UPS) with enhanced flexibility and improved efficiency. With
     27 April 2017
  • HuronReport
    HuronReport The Company's products are focused for applications, such as indoor and outdoor lighting, video displays, transportation, electronic signs and signals, , and wireless systems. It currently has negative earnings. The Firm has
     26 April 2017
  • BBNS
    Breaking Finance News Cree, Inc. logo Zacks Investment Research downgraded shares of Cree, Inc. (NASDAQ:CREE) from a buy rating to a hold rating in a research note published on Tuesday. According to Zacks, “Cree, Inc. is a market-leadin
     26 April 2017
  • Markets Daily
    Markets Daily Cree logo Russell Investments Group Ltd. bought a new position in Cree, Inc. (NASDAQ:CREE) during the fourth quarter, according to its most recent filing with the Securities and Exchange Commission (SEC). The institutional inves
     23 April 2017
  • Compound Semiconductor
    The products are used to convert power in applications such as , solar , AC-AC converters, industrial converters and electric vehicles. Backed by $70 million from the US Department of Energy over five years, PowerAmerica is
     19 April 2017
  • GlobeNewswire (press release)
    Orbit's Power Group, also located in Hauppauge, NY, designs and manufactures a wide array of power products including AC , frequency converters, , uninterruptible , VME/VPX as well as various COTS ...
     6 April 2017

.