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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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BA2902F датащи(PDF) 19 Page - Rohm |
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BA2902F датащи(HTML) 19 Page - Rohm |
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19 / 26 page  Technical Note BA10358F/FV, BA10324AF/FV, BA2904SF/FV/FVM, BA2904F/FV/FVM BA2902SF/FV/KN, BA2902F/FV/KN, BA3404F/FVM 19/25 www.rohm.com 2011.08 - Rev.B © 2011 ROHM Co., Ltd. All rights reserved. ● Examples of circuit ○ Voltage follower ○ Inverting amplifier ○ Non-inverting amplifier Voltage gain is 0 [dB]. This circuit controls output voltage (Vout) equal input voltage (Vin), and keeps Vout with stable because of high input impedance and low output impedance. Vout is shown next formula. Vout=Vin For inverting amplifier, Vin is amplified by voltage gain decided R1 and R2, and phase reversed voltage is outputed. Vout is shown next formula. Vout=-(R2/R1)・Vin Input impedance is R1. For non-inverting amplifier, Vin is amplified by voltage gain decided R1 and R2, and phase is same with Vin. Vout is shown next formula. Vout=(1+R2/R1)・Vin This circuit realizes high input impedance because Input impedance is operational amplifier’s input Impedance. VEE Vout Vin VCC R2 R1 VEE R1//R2 Vin Vout VCC VEE R2 VCC Vin Vout R1 |
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