![Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy](https://c8.alamy.com/comp/EHXBNP/old-vacuum-tube-az1-dual-diode-rectifier-used-in-the-power-supply-EHXBNP.jpg)
Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy
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