BC109 TRANSISTORS HOW TO
BC109 TRANSISTORS CODE

Without wishing to get too far into the world of transistor manufacturing, they all have a ‘sandwich’ type construction. PNP stands for positive/negative/positive, and NPN stands for negative/positive/negative. Arbiter merged with Dallas Electronics Ltd around 1968, and by the end of that year, Fuzz Faces were being made with NPN silicon transistors.

NKT275s can sound wonderful, but their sonic quality is notoriously inconsistent and their performance varies depending on ambient temperature. Arbiter Electronics Ltd began making Fuzz Faces in 1966 using NKT275 PNP germanium transistors. Let’s first distinguish between the two Fuzz Face eras.

BC109 TRANSISTORS CODE

to the mumbo jumbo code LTspice uses such as ISE= ISC= BF= BR= etc.? I basically want to enter all those listed old germanium transistors into standard.bjt with the appropriate codes that represent those transistors' specifications so I can accurately reconstruct sections of the camera's circuits where the transistors are in LTspice, run the appropriate signals through them and look at the output signal, then after that replace the germanium with a silicon and the appropriate resistors to make the silicon do the job similarly to the germanium and test the output signal to see if it's the same so I know if it will work or not.The original Fuzz Face circuit requires just a handful of components and a small circuit board Positive elements What I want to know is when I want to add new transistors to the standard.bjt, how do I convert the transistor specifications like max collector-base voltage, max collector current etc. That particular transistor I am aware is already in the models list in standard.bjt and I actually cut and pasted the given code for that 2N3393 transistor from standard.bjt as an example showing what kind of mumbo jumbo coded parameters LTspice uses to specify transistor values instead of having a user friendly parameter settings for us to add new transistors such the data on transistors listed on. Thanks for helping but that wasn't quite the answer I was after nor that was the question I was actually asking. Lastly here's the list of transistors this camera contains:ĢN337 X5 (can subsitute with 2N699 except IO safety circuit)ĢN2671 X28 (can substitute with 2N2084 & 2N1309)

BC109 TRANSISTORS HOW TO

So I was wondering if anyone can help me on how to go about adding transistors and encoding the transistors specifications to that of LTspice's mumbo jumbo coding? Any advice would be much appreciated. Maximum collector current (Ic max): 100mAįorward current transfer ratio (hFE), min/max: 90/400 Maximum collector-emitter voltage (Uce): 25V Maximum collector-base voltage (Ucb): 25V Maximum collector power dissipation (Pc): 200mW However I haven't got the faintest idea in understanding the code values of the transistors eg.: Īnyhow cutting to the chase I need to be able to test sections of the camera's circuitry using the original germanium transistors in LTspice and then with silicon transistors along with the necessary modifications test the circuitry again to see if the results match the original design.

Unfortunately the circuit has obsolete germanium transistors so I need to somehow substitute modern available silicon transistors in place of them and have been reading up some modification tips on substituting germaniums for silicons here.

I am wanting to build an image orthicon B&W television camera and have the complete circuit diagram for a 1960s transistorized image orthicon camera chain.

Bc109 transistors