Heathkit IM-48 - Power Supply; Range Switch; Test Switch

(2=9f f
"Lf
Y?:f <ZFFf6FP6E]AW:f RPWAYAPLf Y?:f-+-$f 8:628:f
AWf6PLL:6Y:8fYPfY?:f PZYRZYfP<fY?:f"$f2L2F_`:Tf 2L8f
FP]f<T:SZ:L6_fALY:TJP8ZF2YAPLf6PKRPL:LYfAWfT:28f
8AT:6YF_fPLfY?:fK:Y:Tf
   8:628AL=f BWf 266PJa
RFAW?:8f
4_f ZW:f P<f Y?:f)% f W]AY6?f +?AWf6PLb
YTPFWf2FFfP<fY?:f <[L6YAPLWf P<fY?:f,"&f%#f01b
)f
2L8fY?:fRTPR:TfK:Y:TfW62F:Wf2T:fK2TE:8f PLf
Y?:f <TPLYf R2L:Ff ALfY:TKWfP<f <ZFFf W62F:fT:28AL=Wf
(T:6AWAPLf ffT:WAWYPTWf2T:fZW:8f 2L8f8:628AL=fAWf
2TT2L=:8fWPf Y?2YfY?:f2YY:LZ2YAPLfAWff85fR:TfWY:Rf
+*+f *."+!f ':T2YAL=fF:\:FWfP<fY?:fFP]f2L8f
?A=?f <T:SZ:L6A:Wf62Mf4:f 6?:6E:8f AL8A\A8Z2FF_f 5_f
RF26AL=f Y@:f W]AY6?f ALf Y?:f 2RRTPRTA2Y:f RPWAYAPLf
J2TE:8f PLf Y?:f <TPLYf R2L:Ff "LfY?:f#fRPWAYAPLf
PLF_fY?:fFP]f <T:SZ:L6_f6PKRPL:LYf]AFFf5:f2\2AFb
24F:f2YfY?:f
PZYRZYfY:TJAL2FWf #P]f<T:SZ:L6_f]AFFf
2FWPf=PfYPfY?:fK:Y:Tf]?:LfY?:f,%+"&%fW]AY6?f
AWf ALf Y?:f #f !f +*+f RPWAYAPLf .?:LfRF26:8fALf
Y?:f
!fRPWAYAPLf R:T<PTJ2L6:fAWfY?:fW2K:f:^6:RYf
Y?2Yf PLF_f Y?:f ?A=?f <T:SZ:L6_f ]AFFf 5:f2\2AF25F:f
+?AWfW]AY6?f K[WYf5:fALfY?:f&()+fRPWAYAPLf2Yf
2FFf YAK:Wf :^6:RYf ]?:Lf Y?:fF:\:FWf2T:f5:AL=f28a
D[WY:8f
PTf ]?:LfPLF_fPL:f
<T:SZ:L6_f
AWf4:AL=fZW:8f
<PTfY:WYAL=fRZTRPW:WfFFfWA>L2FfYPfY?:f,%+"&%f
W]AY6?fAWfW?PTY:8fPZYfALfY?:f&()f+fRQWAYAPLfYPf
RT:\:LYf?A=?f<T:SZ:L6_f6TPWW<::8fALY:T<;T:L6:f



]?A6?f62Lf F:28f YPfJAWF:28AL=f T:WZFYWf +?:fFP]fYPf
?A=?f<T:S[:L6_fT2YAPfW:Yf 5_fZW:fP<fY?:fW]AY6?f]AHIf
?PF8fYTZ:f]?:LfALfY?:f&()f+fRPWAYAPLf2L8f<PUf
RT26YA62FF_f 2FFf W:YYAL=Wf P<fY?:f &,+(,+f 6PLYVPGf
]AY?PZYf Y?:f L:6:WWAY_f
P<f T:W:YYAL=f Y?:f T2YCPf
 
+?:fRP]:Tf WZRRF_f:KRFP_Wf2f/f<ZFFf]2\:fT:6YAc
<A:Tf ]AY?f]:FFf<AFY:T:8ffPZYRZYf(F2Y:f\PFY2=:f<PTf
Y?:fT:6YB<A:Tf 2L8f <AF2K:LYf \PFY2=:f<PTf2FFfYZ5:WfAWf
<[TLAW?:8f 4_fY?:fRP]:Tf YT2LW<PTK:Tf 2Wf ]:FFf 2Wf
\PFY2=:f <PTfY?:fFP]f<T:SZ:L7_fWA=L2FfWPZT6:f*:Rd
2T2Y:f<AFY:TAL=fW_WY:KWf2T:fZW:8f<PTfY?:f?A=?f<T:d
SZ:L6_fPW6AFF2YPTf2L8fY?:f2L2F_`:TfYPfALWZT:f6PKd
RF:Y:f AWPF2YAPLf ):WAWYPTWf 2T:f ZW:8fYPf8TPRfY?:f
?A=?f f T:6YA<A:Tf RF2Y:f \PFY2=:f8P]LfYPf2f F:\:Ff
6PKR2YA5F:f ]AY?fY?:f?A=?f<T:SZ:L6_fPW6AFF2YPTf3O8f
2f
6PL8:LW:TfAWf6PLL:6Y:8f5:Y]::Lf Y]PfP<fY?:fT:e
WAWYPTWf2L8f =TPZL8fYPf T:KP\:f2FFf?2TKPLA6f6PMb
Y:LYf +?AWfALWZT:Wf2fRZT:ff6_6F:f]2\:<PTKf<PTf
FP]f <T:SZ:L6_fY:WYfRZTRPW:Wf
+?:f RP];TfYT2LW<PTK:Tf?2Wf2f8Z2FfRTAK2T_f2N8f
K2_f
5:f ]AT:8f<PTf:AY?:Tff-fPTff -f Wf
2fW2<:Y_f<:2YZT:fY?:f6?2WXAWfP<fY?:fALWYTZK:LYfAWf
6PLL:6Y:8fYPfY?:f =TPZL8fRALfP<fY?:fRPF2TA`:8fRF[=f
<ZTLAW?:8f PLfY?:f]AT:fFAL:f6PT8f