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Posts tagged controller

Digital Control

Digital Control Circuit for Switching using 4001B, 4N35 The continuous controller enclosed in the dashed square can be replaced by a digital controller shown below that performs same control task as the continuous controller. The basic difference between these controllers is that the digital system operates on discrete signals or samples of the sensed signal […]

Variable Power Supplies

Variable Power Supplies circuit using 2N3906, LM317, LM337, LM324, MJ2955, 7805, 2N3055, 2N3905 Parts: P1_500R P2_10K R1,R2_2K2 R3_330R R4_150R R5_1R C1_3300µF C2_1µF D1,D2_1N5402 D3_5mm Q1_BC182 Q2_BD139 Q3_BC212 Q4 _2N3055 T1_220V Primary, This Variable Power Supplies circuit has a current limit feature, in case there is a short circuit or other problem places. Here’s a circuit […]

Digital Control Circuit

Digital Control Circuit for Switching using 4013B, 4060B, 1N4148, C954, 1N4004, 2N7000

Electronics Schematic Diagram alarm Door Bell circuit using NE555 part 1

Electronics Schematic Diagram alarm Door Bell circuit using NE555 The main part of this doorbell circuit are two NE555 timer ICs.When some one presses switch S1 momentarily ,the loud speaker sounds a bell tone as long as the time period of the monostable multivibrator built around IC1. When the switch S1 pressed, IC1 is triggered […]

LM555 Electronics Schematic Diagram Sweeping Output Frequency Siren part 24

LM555 Electronics Schematic Diagram Sweeping Output Frequency Siren part 24

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