Electronic circuits; Electronic circuits for low power devices; Electronic components in the nature of circuits, capacitors, connectors, filters, oscillators, relays, switches, transformers, resistors, semiconductors, integrated circuits, rectifiers, and transistors for low power communications; Electronic components in the nature of circuits, capacitors, connectors, filters, oscillators, relays, switches, transformers, resistors, semiconductors, integrated circuits, rectifiers, and transisto...