Tuesday, December 6, 2016

Telecom Malaysia Phone Junction Box ET 0005 13105

Just for reference Telecom Malaysia telephone land line junction box. This is where the cable to telephone or modem is connected. This is an old model that was installed many years ago





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Adjustable DC to DC step up voltage booster using LM2577 -Adj P+ chip

One simple circuit to step up voltage using LM2577 -Adj P+ chip. The schematic is from Texas Instrument and it works expected - and below is...