2:36   XCBV: Thermistor/Temperature Sensor Demonstration Circuit 4:06   XCBV: How To Connect a Slotted Optical Gate 3:24   XCBV: Reed Switch Demonstration Circuit 5:15   XCBV: H11L1 Optical Coupler/Isolator 5:20   XCBV: Astable 555 Timer Sink/Source Example 11:31   XCBV: How to Make a Vibration Sensor 11:20   XCBV: Window Tap Alarm Circuit 2:33   xcbv 7:08   XCBV: LM1458 Dual OpAmp as Voltage Comparator 0:25   xcbv 1:02   xcbv 0:24   xcbv 1:07   gughgfugjdfhnlb ,xj freujghbvnd xcbv 0:57   zm,xcbv 0:03   Xcbv 2:50   xcbv 0:11   xcbv 1:18   CD CD xcbv