Following units are mounted on "U" section transparent plastic base of 90X65X28mm high together with color coded 4mm sockets with printed symbol of the components and their pin configuration.
EL1236 Diode Valve Unit EL1237 Triode Valve Unit EL1238 Pentode Valve Unit EL1239 Thyatron Valve Unit EL1240 Photo Diode Unit EL1241 Silicon Diode Unit EL1242 Germanium Diode Unit EL1243 Zener Diode Unit EL1244 NPN Transistor Unit EL1245 PNP Transistor Unit EL1246 FET Transistor Unit EL1247 UJT Transistor Unit EL1248 MOSFET Transistor Unit EL1249 Photo Transistor Unit EL1250 Photo Cell Unit EL1251 Thermistor Unit EL1252 Cadmium Sulphide Resistor (CDS) Unit EL1253 Power Transistor Unit EL1254 N-type Germanium Wafer Unit EL1255 P-type Germanium Wafer Unit EL1256 Triac Unit EL1257 Silicon Controlled Rectifier (SCR) Unit EL1258 REED Switch Unit EL1259 READ Switch Unit