Solid state isolation device using opto-isolators

摘要: An improved solid state isolation device that uses opto-isolators to provide an electrical barrier between a telephone network and user equipment includes load current control circuit, adjustable termination circuit eliminate or reduce signal distortion insensitivity low levels resulting from loop current, lack of complex impedance compensation/termination for diverse system parameters. trans-hybrid return loss reduces internal losses; while losses are reduced by the use Shottky diodes in line coupler circuit. A high pass filter improves common mode rejection ratios transmit receive paths, compensation is provided account manufacturing variances opto-isolators. additional connection also adapt opto-isolator with 3-wire ring circuitry.