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Ultrasonic energy detector with frequency and amplitude indications and background noise reduction
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Conductor tracer with improved current regulating transmitter
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Conductor tracer transmitter with non-reversing magnetic field tracing signal
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High-frequency amplifier with enhanced gain from use of the Miller effect capacitance
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Conductor tracer with improved open circuit detection, close-range discrimination and directionality
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Tracing electrical conductors by high-frequency constant-energy-content pulse loading
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Tracing electrical conductors by high-frequency constant-energy-content pulse loading
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Tracing electrical conductors by high-frequency loading and improved signal detection
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Tracing electrical conductors by high-frequency loading and improved signal detection
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