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Posts tagged burglar alarm circuit

Simple Alarm Circuit using 12C509

alarm circuit diagrams Simple Alarm Circuit using 12C509, 2N7000, 78L05

How to make a tv antenna

How to make a tv antenna There are some simple yet effective homemade TV Antenna designs that can be built at home with tv antenna circuit using BF180

Circuit Test Equipment

Circuit Test Equipment using LM6462, 2N7000

What kind of engineering contains the design of mobile electronics?

Dan D asked: I’m trying to find different types of engineering that interests me; and I cant seem to figure out which form of engineering contains the design of mobile electronics (preferably cell phones)

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 […]

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