Title: Control circuit for electric tool two-purpose power supply
Application Number: 200610153589 Application Date: 2006.09.13
Publication Number: 1937375 Publication Date: 2007.03.28
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02M1/10;G05F1/10;H02J7/00
Applicant(s) Name: He Yueming Address:
Inventor(s) Name:
Attorney & Agent: xuxue bei
Abstract:
    The control circuit consists an inverter with a controllable input end (CIE) and a light coupler (IC1). The 2nd winding (L) of the inverter is connected to a rectification/filter (RF) circuit. The input circuit of IC1 is connected in serial between the output end of RF and the ground. The output circuit of IC1 is connected between the CIE of the inverter and the ground of the inverter. What special is that there is a regulation circuit (RC) connecting in serial to the input circuit of IC1. This RC is a current regulation circuit (CRC) and at least possesses a switch. CRC controls the amplitude of the current flowing though IC1 input circuit via operating switches on/off. Comparing with the exited technique, this invention realizes that the same 2nd winding of the inverter can respectively output at least two different stable voltages. The invention can be used both as the power supply of electrical motion tools and for battery charging.
Time: 5