300B电子管技术参数.docx

300B系列直热式阴极中功率三极管，用于A1类放大在音频放大器中适应用于输出功率要求在100W场合300B-C长寿命设计，选用纯石墨阳极、阳极耗散功率可达60W,适当调整电路，单管作A1类放大，可获得20W以上输出功 率300B-98极限额定值阳极电压 480V阳极耗散功率 40W阴极电流自偏压 100 mA固定偏压 70 mA极间电容输入电容 9PF输出电容 4.3PF跨路电容 15PF静态参数Ua 300V-Ug 60 Vla 60mAGm 5.5mA/VRi 0.7 KOg 3.85Pout 6.6W灯丝加热Uf(DC) 5 VIf(DC) 1.2A Ug推荐参数 Ua Uf(AC) Uf(DC) la V V =V mA 33 29.5 77 200----- {45 41.5 20 46 42.6 74 250 {57 53.6 22 60 56.5 68 300 {70 66.5 23 86 82.5 68 400 { 98 94.5 19极限参数 450 100 96.5 60岂加与* I世邊癡盟u-"-■叫%卜\1典型工作参数音频放大器A1类放大：Ua-Ug la -RL Pout2ndW db20020025025025025025025030030030030030035035035035035040040040040040045045045045045045045030200034025002.63020004.94030004.05025004.46020004.76027005.08015005.04025006.75020007.25030006.16024006.68017007.55036007.860200010.26030008.36040007.08022009.64050008.450100011.55040009.460350010.580250012.54060009.550500010.760400012.560550010.180200017.880100014.680450011.50ZZ。