My first guess was possibly a variation on the French F series ( similar to F-2) firing device used with Claymore type mines, but not sure now. I could be way off. It takes 1 D cell battery, instead of 2 on F-2, also different input/output arrangement. Any info would be appreciated.
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Electronic Fuze Identification, possibly a French?
It is called the 'TEST UNIT' or 'CONTROL UNIT' in english.
The control unit consists of two main components and is used remotely to check that the circuit is correct. The unit comprises a battery container, which
accepts a battery type LR20 (NBA3030 in French military nomenclature) and a body which contains the electronic circuitry. These two components screw together and the joint is sealed by use of an O ring. The following components are situated on the top of the body :
1 A two pin plug which mates with one of the twin pole sockets on the safety and control line Tee connector.
2 A test lamp which lights when the fuze circuitry and power supplies are correct.
3 A test button which enables the state of the control unit to be verified
Cheers,
S.
The control unit consists of two main components and is used remotely to check that the circuit is correct. The unit comprises a battery container, which
accepts a battery type LR20 (NBA3030 in French military nomenclature) and a body which contains the electronic circuitry. These two components screw together and the joint is sealed by use of an O ring. The following components are situated on the top of the body :
1 A two pin plug which mates with one of the twin pole sockets on the safety and control line Tee connector.
2 A test lamp which lights when the fuze circuitry and power supplies are correct.
3 A test button which enables the state of the control unit to be verified
Cheers,
S.
Indeed a great video on the subject. As per my habit, I disassembled the device to see what is inside. Nothing much just a transistor, a diode and a couple of resistors, as well as an old incandescent bulb. What is fascinating was the transistor used, a Germanium BJT! you'd expect this type in devices from 70s. So are these are old stock laying around somewhere and never got updated?
The fuze is inside the rear panel, potted in silicone (white rectangle), near the batteries. Fuze name in French is "Allumeur électronique à rupture de fil" (breakwire electronic fuze ?). It is activated by the fracture of a double fine wire laid in the line of fire. At 4'26'' he show the test unit, the det and 2 fine wire reels.
Cheers,
S.
Cheers,
S.
Yeah, the unit I have is just a tester basically. Would have been cool to see the actual fuze in the back though, to see if they used Germanium transistor in there too i.e. produced in 70s. Unfortunately, it's impossible to find any circuit diagram for this or any other similar devices.
Eggburt1969
Well-Known Member
The combined fuze and control device (Appareil de Control) circuit diagram is in the 1977 French publication 'MAT 2465 - Mine Antichar a Action Horizontale Modele F1'.
Thanks for sharing, so these are definitely from 70s. Are these French publications available anywhere online? Just wondering if similar info/diagram available for F2 (ALELN FU FIL F2 ?) which I have laying around somewhere. I'd appreciate it.
