Automatically terminating battery charging arrangement with means for decreasing ripple effect

Claim 2

Battery charging arrangement, comprising, in combination, rectifier means furnishing a rectifier output voltage having a DC and an AC component at a rectifier output terminal; means connecting said rectifier output terminal to said battery; first circuit means connected to said rectifier output terminal for furnishing a first voltage corresponding to said rectifier output voltage; second circuit means connected to said rectifier output terminal for furnishing a second voltage corresponding to said AC component of said rectifier output voltage; third circuit means connected to said first and second circuit means, for varying said first voltage as a funCtion of said second voltage, said sovarying first voltage constituting a combined voltage; and terminating means connected to said first circuit means for terminating the charging of said battery when said combined voltage exceeds a predetermined voltage.

Claim 3

An arrangement as set forth in claim 1, wherein said first circuit means comprise first voltage divider means, furnishing said first voltage at a voltage divider terminal.

Claim 4

An arrangement as set forth in claim 2, wherein said second circuit means comprise second voltage divider means, and D.C. blocking means connected in series with said second voltage divider means.

Claim 5

An arrangement as set forth in claim 3, wherein said third circuit means comprise transistor means having an emitter-collector circuit connected in parallel with a determined portion of said first voltage divider means and a base connected to said second voltage divider means, in such a manner that a decrease in emitter-collector resistance resulting from an increase in said A.C. component of said rectifier output voltage results in a decrease of said voltage at said first voltage divider terminal.

Claim 6

An arrangement as set forth in claim 4, wherein said terminating means comprise switching circuit means furnishing a switching output signal when the voltage at said first voltage divider terminal exceeds a predetermined voltage.

Claim 7

An arrangement as set forth in claim 5, wherein said terminating means further comprise a Zener diode interconnecting said first voltage divider terminal and the input of said switching circuit means.

Claim 8

An arrangement as set forth in claim 6, wherein said rectifier means comprise at least one controlled rectifier element having a control electrode, said controlled rectifier element having a non-conductive state when the voltage at said control electrode is less than a predetermined control voltage.

Claim 9

An arrangement as set forth in claim 7, wherein said terminating means comprise additional transistor means having an emitter-collector circuit connected to said control electrode and a base connected to the output of said switching circuit means, for reducing said voltage at said control electrode to less than said predetermined control voltage in response to said switching circuit output signal.

Claim 10

An arrangement as set forth in claim 8, wherein said switching circuit means comprise a Schmitt trigger.

Claim 11

Battery charging arrangement, comprising, in combination, rectifier means furnishing a rectifier output voltage having a DC and an AC component at a rectifier output terminal; means connecting said rectifier output terminal to said battery; first voltage divider means connected to said rectifier output terminal and having a voltage divider tap; terminating means connected to said voltage divider tap for terminating the charging of said battery when the voltage at said voltage divider tap exceeds a predetermined voltage; and voltage dependent circuit means connected in parallel with a portion of said first voltage divider means, for decreasing the voltage at said voltage divider tap in response to increases of said AC component of said rectifier output voltage.

Claim 12

Battery charging arrangement, comprising, in combination, rectifier means furnishing a rectifier output voltage having a DC and an AC component at a rectifier output terminal; means connecting said rectifier output terminal to said battery; first voltage divider means connected to said rectifier output terminal and having a voltage divider tap; terminating means connected to said voltage divider tap for terminating the charging of said battery when the voltage at said voltage divider tap exceeds a predetermined voltage; and voltage dependent circuit means connected in parallel with a portion of said first voltage divider means, for decreasing the voltage at said voltage divider tap in response to increases of said AC component of said rectifier output voltage.

Claim 13

Battery charging arrangement, comprising, in combination, rectifier means furnishing a rectifier output voltage having a DC and an AC component at a rectifier output terminal; means connecting said rectifier output terminal to said battery; first voltage divider means connected to said rectifier output terminal, for furnishing a first voltage corresponding to said rectifier output voltage at a voltage divider terminal; second voltage divider means, including DC blocking means, connected to said rectifier output terminal for furnishing a second voltage corresponding to said AC component of said rectifier output voltage; transistor means having an emitter-collector circuit connected in parallel with a determined portion of said first voltage divider means and a base connected to said second voltage divider meAns, in such a manner that a decrease in emitter-collector resistance resulting from an increase in said AC component of said rectifier output voltage results in a decrease of said voltage at said first voltage divider terminal; and terminating means connected to said voltage divider terminal for terminating the charging of said battery when said voltage at said voltage divider terminal exceeds a predetermined voltage.

Claim 14

Battery charging arrangement, comprising, in combination, rectifier means furnishing a rectifier output voltage having a DC and an AC component at a rectifier output terminal; means connecting said rectifier output terminal to said battery; first voltage divider means connected to said rectifier output terminal, for furnishing a first voltage corresponding to said rectifier output voltage at a voltage divider terminal; second voltage divider means, including DC blocking means, connected to said rectifier output terminal for furnishing a second voltage corresponding to said AC component of said rectifier output voltage; transistor means having an emitter-collector circuit connected in parallel with a determined portion of said first voltage divider means and a base connected to said second voltage divider meAns, in such a manner that a decrease in emitter-collector resistance resulting from an increase in said AC component of said rectifier output voltage results in a decrease of said voltage at said first voltage divider terminal; and terminating means connected to said voltage divider terminal for terminating the charging of said battery when said voltage at said voltage divider terminal exceeds a predetermined voltage.