<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-07-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000027748</issuerCik>
        <issuerName>DEL GLOBAL TECHNOLOGIES CORP</issuerName>
        <issuerTradingSymbol>DGTC.OB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001452857</rptOwnerCik>
            <rptOwnerName>STEEL PARTNERS HOLDINGS L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>590 MADISON AVENUE, 32ND FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001262861</rptOwnerCik>
            <rptOwnerName>STEEL PARTNERS II GP LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STEEL PARTNERS HOLDINGS L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>590 MADISON AVENUE, 32ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001422282</rptOwnerCik>
            <rptOwnerName>Steel Partners LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STEEL PARTNERS HOLDINGS L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>590 MADISON AVENUE, 32ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001005784</rptOwnerCik>
            <rptOwnerName>LICHTENSTEIN WARREN G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STEEL PARTNERS HOLDINGS L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>590 MADISON AVENUE, 32ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000915653</rptOwnerCik>
            <rptOwnerName>STEEL PARTNERS II LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STEEL PARTNERS HOLDINGS L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>590 MADISON AVENUE, 32ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $.10 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2009-07-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>47300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.4600</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2998770</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Steel Partners II, L.P.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $.10 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2009-07-24</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>41000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.4600</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3039770</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Steel Partners II, L.P.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $.10 par value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>57292</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4 is filed jointly by Steel Partners Holdings L.P. (&quot;Steel Holdings&quot;), Steel Partners II, L.P. (&quot;Steel Partners II&quot;), Steel Partners LLC (&quot;Partners LLC&quot;), Steel Partners II GP LLC (&quot;Steel Partners GP&quot;) and Warren G. Lichtenstein. Steel Holdings, Partners LLC, Steel Partners GP and Mr. Lichtenstein may be deemed to be 10% owners of the Issuer and Steel Partners II is a 10% owner of the Issuer.</footnote>
        <footnote id="F2">Shares owned directly by Steel Partners II, and owned indirectly by Steel Holdings by virtue of it being the sole limited partner of Steel Partners II, by Partners LLC by virtue of it being the manager of Steel Partners II and Steel Holdings, by Steel Partners GP by virtue of it being the general partner of Steel Partners II and Steel Holdings and by Mr. Lichtenstein by virtue of his position as the manager of Partners LLC and the managing member of Steel Partners GP. Steel Holdings, Partners LLC, Steel Partners GP and Mr. Lichtenstein disclaim beneficial ownership of the shares owned by Steel Partners II except to the extent of their pecuniary interest therein.</footnote>
        <footnote id="F3">Shares owned directly by Steel Holdings, and owned indirectly by Partners LLC by virtue of it being the manager of Steel Holdings, by Steel Partners GP by virtue of it being the general partner of Steel Holdings and by Mr. Lichtenstein by virtue of his position as the manager of Partners LLC and the managing member of Steel Partners GP. Partners LLC, Steel Partners GP and Mr. Lichtenstein disclaim beneficial ownership of the shares owned by Steel Holdings except to the extent of their pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: Steel Partners Holdings L.P., By: Steel Partners II GP LLC, General Partner, By: /s/ Sanford Antignas, as Attorney In Fact for Warren G. Lichtenstein, Managing Member</signatureName>
        <signatureDate>2009-07-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: Steel Partners II GP LLC, By: /s/ Sanford Antignas, as Attorney In Fact for Warren G. Lichtenstein, Managing Member</signatureName>
        <signatureDate>2009-07-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: Steel Partners LLC, By: /s/ Sanford Antignas, as Attorney In Fact for Warren G. Lichtenstein, Manager</signatureName>
        <signatureDate>2009-07-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: By: /s/ Sanford Antignas, as Attorney In Fact for Warren G. Lichtenstein</signatureName>
        <signatureDate>2009-07-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: Steel Partners II, L.P., By: Steel Partners II GP LLC, General Partner, By: /s/ Sanford Antignas, as Attorney in Fact for Warren G. Lichtenstein, Managing Member</signatureName>
        <signatureDate>2009-07-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
