Loudspeaker amplifier circuit Reference application to: VDD = 4. 5V R4 = 220K C4 = 330P The circuit is useful to BFR03B chip, here is its detailed information: BFR03B specification All In One Pc,All In One Pc Gaming,All In One Pc As Monitor,All In One Pc For Business Guangzhou Bolei Electronic Technology Co., Ltd. , https://www.nzpal.com
