Penfold, R. A. <br/><br/>
Power supply projects /  [Book]. 
by R.A. Penfold. 
 - London :   Benard Babani (publishing) Ltd.,   1989 
 - 91p. :   ill. ;   19cm. 
 - Bernard Babani ;  BP76 .
<br/><br/><label>ISBN: </label>0900162961 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic apparatus and appliances--Power supply.<br/>Electronics--Amateurs' manuals.