![]() ![]() gain control and tone control in untuned amplifiers having semiconductor devices H03G9/12- Combinations of two or more types of control, e.g.gain control and tone control in untuned amplifiers ![]() H03G9/02- Combinations of two or more types of control, e.g.H03G9/00- Combinations of two or more types of control, e.g.238000006011 modification reaction Methods 0.000 description 2.238000005859 coupling reaction Methods 0.000 description 2.230000005540 biological transmission Effects 0.000 description 4.241000269627 Amphiuma means Species 0.000 claims description 12.238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 48.230000003321 amplification Effects 0.000 claims abstract description 48.230000001419 dependent Effects 0.000 title claims abstract description 98.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH Application granted granted Critical Publication of US3764745A publication Critical patent/US3764745A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Robert Bosch GmbH Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US00121274A Inventor L Bottcher K Heyne Current Assignee (The listed assignees may be inaccurate. Google Patents Multiple stage hearing aid transistor amplifier having signal voltage controlled frequency dependent networkĭownload PDF Info Publication number US3764745A US3764745A US00121274A US3764745DA US3764745A US 3764745 A US3764745 A US 3764745A US 00121274 A US00121274 A US 00121274A US 3764745D A US3764745D A US 3764745DA US 3764745 A US3764745 A US 3764745A Authority US United States Prior art keywords frequency amplifier voltage circuit stage Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3764745A - Multiple stage hearing aid transistor amplifier having signal voltage controlled frequency dependent network This circuit shows how I covert 5V inputs to 3.3V which are suitable for the GPIO pins on the Raspberry Pi.īasic voltage divider supplying 5V from a 12V sourceĬircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.US3764745A - Multiple stage hearing aid transistor amplifier having signal voltage controlled frequency dependent network Simple voltage reference from 50VDC input. ![]()
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