Patents by Inventor Nafish Jalal

Nafish Jalal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Circuit for generating a control voltage depending on voltage phase of an input signal
    Patent number: 10439509
    Abstract: The present invention provides a circuit for generating a control voltage depending on voltage phase of an input signal. The circuit comprises a first transistor; a second transistor, a diode, a Zener diode and a capacitor. Base and collector of first transistor along with collector of second transistor are connected to a DC voltage source. Anode of the diode is connected to base of the first transistor and cathode of the diode receives the input signal. Anode of the Zener diode is connected to the base of the second transistor and cathode of the Zener diode connected to the collector of the first transistor. The capacitor is connected between cathode of the Zener diode and ground terminal. During positive half cycle and negative half of input signal, the circuit outputs a high control voltage and a low control voltage respectively.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: October 8, 2019
    Assignee: VARROC ENGINEERING LIMITED
    Inventors: Anupam Sharma, Nafish Jalal