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Archives for November, 2017

How to make a simple touch switch circuit

How to make a simple touch switch circuit ? Simple touch switch circuit using transistor : C945

RELAY driver CIRCUIT WITH OPTICAL ISOLATION

RELAY driver CIRCUIT WITH OPTICAL ISOLATION using PMV30UN

Radio Remote Control using DTMF receiver transceiver

Radio Remote Control using DTMF receiver transceiver

LM555 Chip timer part 7

LM555 Chip timer part 7

2 tr preamp mic schematic

2 tr preamp mic schematic using C536, C458 R1,7 …… 2K2 R2 …….. 47K R3 …….. 270 R4 …….. 2M2 R5 …….. 180K R6 …….. 470K R8 …….. 15K R9 …….. 150K C1 …….. 22uF/16V C2 …….. 200nF C3 …….. 10uF/16V Q1 …….. C694 / C458 Q2 …….. C536 / C458 VR …….. 50K

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