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The '''BD-4''', Tek part number 152-0070-00, is a 0.1 mA Germanium [[back diode]]. It is used in the HF-sync circuit of the [[7S14]] and trigger circuit of the late [[5T1A]]. | The '''BD-4''', Tek part number 152-0070-00, is a 0.1 mA Germanium [[back diode]]. It is used in the HF-sync circuit of the [[7S14]] and trigger circuit of the late [[5T1A]]. | ||
==Links== | |||
* Tunnel diode switching circuits and the back diode. Service Scope [[Media:Service Scope 38 Jun 1966.pdf | No. 38, June 1966]] and [[Media:Service Scope 39 Aug 1966.pdf | No. 39, August 1966]] | * Tunnel diode switching circuits and the back diode. Service Scope [[Media:Service Scope 38 Jun 1966.pdf | No. 38, June 1966]] and [[Media:Service Scope 39 Aug 1966.pdf | No. 39, August 1966]] | ||
<gallery> | <gallery> | ||
Ge back diodes2.png | Ge back diodes2.png | GE back diodes | ||
BD1_to_BD7_data.png | BD1 to BD7 back diode data from 1977 GE semiconductor data book | |||
</gallery> | </gallery> | ||