Zehnder, O. <br/><br/>
Selection of tubes for use in power generators and R. F. amplifiers 

<br/><br/>Introduction, tube cooling, power supply. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TUBES<br/>POWER GENERATORS<br/>AMPLIFIERS<br/>TUBE COOLING<br/>POWER SUPPLY
<br/><br/><label>Universal Decimal Class. No.: </label>H621 BRO