DC VOLTAGE REGULATOR Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: regulator has reference-voltage source 1, differential amplifier 2, first controlled current generator 3, current limiter 4, second controlled current generator 5, composite transistor 6, filter capacitor 7, triggering resistor 8. Rated working condition ranging between R_l= ∞ and R_l= R_r is characterized in that first and second controlled current generators produce fixed currents I_sup=I_st+I_w and I_bal, respectively. Under these conditions, differential amplifier gain for ensuring load current between 0 and I_st is sufficient. In case of heavy overload R_l≪ R_st, condition is characterized in that first controlled current generator produces current I_sup→ I_sp and second one, I_bal→ O. Under these conditions, differential amplifier gain can ensure load current: K·I_r, where K ≪ 1. In case of low overload R_l< R_r, condition is characterized in that first and second controlled current generators produce currents I_sup= I_l+K·I_w and K·I_bal, respectively, where K<1. Under these conditions, differential amplifier gain can provide for load current from I_r to K·I_r, where K ≅ 1. EFFECT: enlarged functional capabilities concerning efficient overload protection within comprehensive range of probable load currents. 1 dwg