Temperature compensated voltage regulation system

Claim 2

In an electrical system including a storage battery having a power terminal, a generator having an output winding and a field winding, the output winding providing an output voltage having a magnitude which increases in response to the application of an energizing voltage to the field winding, a charging circuit connected between the output winding of the generator and the power termiNal of the battery for applying a charging voltage to the battery having a magnitude proportional to the magnitude of the output voltage, and an energizing circuit connected between the output winding and the field winding of the generator for applying an energizing voltage to the field winding; a voltage regulator circuit comprising: a drive section including a drive switching device which is normally turned off and which is turned on in response to the application of a bias voltage having a magnitude in excess of a temperature sensitive trigger level determined by the drive device, a voltage responsive device connected with the drive switching device for applying a bias voltage to the drive switching device having a magnitude determined by the difference between the magnitude of a signal voltage applied to the voltage responsive device and a temperature sensitive reference level defined by the voltage responsive device, and a voltage sensing circuit connected with the power terminal of the battery and with the voltage responsive device for applying a signal voltage to the voltage responsive device having a magnitude which is proportional to the magnitude of the charging voltage applied to the power terminal of the battery by the charging circuit, the voltage sensing circuit including a temperature sensitive device for varying the magnitude of the signal voltage in response to variations to temperature of the battery, the drive section mounted on the battery in intimate heat conducting relationship so that the temperature sensitive drive components in the drive section are completely compensated for variations in the temperature of the battery; and a power section including a heat producing power switching device which is normally turned on, the power switching device connected with the drive switching device so that the power switching device is turned off when the drive transistor is turned on, and the power switching device connected in the energizing circuit for applying an energizing voltage to the field winding when the power switching device is turned on, the power section mounted on the generator out of intimate heat conducting relationship with the drive section so that the heat produced by the power components in the power section does not affect the operation of the temperature sensitive drive components in the drive section.

Claim 3

In an electrical system including a storage battery having a power terminal, a generator having an output winding and a field winding, the output winding providing an output voltage having a magnitude which increases in response to the application of an energizing voltage to the field winding, a charging circuit connected between the output winding of the generator and the power terminal of the battery for applying a charging voltage to the battery having a magnitude proportional to the magnitude of the output voltage, and an energizing circuit connected between the output winding and the field winding of the generator for applying an energizing voltage to the field winding; a solid state voltage regulator circuit comprising: a drive section including a drive transistor which is normally rendered fully nonconductive and which is rendered fully conductive in response to the application of a bias voltage having a magnitude in excess of a temperature sensitive trigger level determined by the drive transistor, a voltage responsive diode connected with the drive transistor for applying a bias voltage to the drive transistor having a magnitude determined by the difference between the magnitude of a signal voltage applied to the voltage responsive diode and a temperature sensitive reference level defined by the voltage responsive diode, and a voltage sensing circuit connected with the power terminal of the battery and with the voltage responsive diode for applying a signal voltage to the voltage responsive diode having a magnitude which is proportional to the magnitude of the charging voltage applied to the power terminal of the battery by thE charging circuit, the voltage sensing circuit including a voltage divider network having a temperature sensitive resistor for varying the magnitude of the signal voltage in response to variations in the temperature of the battery, the drive section mounted in intimate heat conducting relationship with the battery so that the temperature sensitive drive components in the drive section are completely compensated for variations in the temperature of the battery; and a power section including a heat producing power transistor which is normally rendered fully conductive, the power transistor connected with the drive transistor so that the power transistor is rendered fully nonconductive when the drive transistor is rendered fully conductive, and the power transistor connected in the energizing circuit applying an energizing voltage to the field winding when the power transistor is rendered fully conductive, the power section mounted on the generator out of intimate heat conducting relationship with the drive section so that the heat produced by the power components in the power section does not affect the operation of the temperature sensitive drive components in the drive section.

Claim 4

In an electrical system including a storage battery having a power terminal, a generator having an output winding and a field winding, the output winding providing an output voltage having a magnitude which increases in response to the application of an energizing voltage to the field winding, a charging circuit connected between the output winding of the generator and the power terminal of the battery for applying a charging voltage to the battery having a magnitude proportional to the magnitude of the output voltage, and an energizing circuit connected between the output winding and the field winding of the generator for applying an energizing voltage to the field winding; a solid state voltage regulator circuit comprising: a drive section including a drive transistor which is normally rendered fully nonconductive and which is rendered fully conductive in response to the application of a bias voltage having a magnitude in excess of a temperature sensitive trigger level determined by the drive transistor, a voltage responsive diode connected with the drive transistor for applying a bias voltage to the drive transistor having a magnitude determined by the difference between the magnitude of a signal voltage applied to the voltage responsive diode and a temperature sensitive reference level defined by the voltage responsive diode, and a voltage sensing circuit connected with the power terminal of the battery and with the voltage responsive diode for applying a signal voltage to the voltage responsive diode having a magnitude which is proportional to the magnitude of the charging voltage applied to the power terminal of the battery by thE charging circuit, the voltage sensing circuit including a voltage divider network having a temperature sensitive resistor for varying the magnitude of the signal voltage in response to variations in the temperature of the battery, the drive section mounted in intimate heat conducting relationship with the battery so that the temperature sensitive drive components in the drive section are completely compensated for variations in the temperature of the battery; and a power section including a heat producing power transistor which is normally rendered fully conductive, the power transistor connected with the drive transistor so that the power transistor is rendered fully nonconductive when the drive transistor is rendered fully conductive, and the power transistor connected in the energizing circuit applying an energizing voltage to the field winding when the power transistor is rendered fully conductive, the power section mounted on the generator out of intimate heat conducting relationship with the drive section so that the heat produced by the power components in the power section does not affect the operation of the temperature sensitive drive components in the drive section.