W watzmann New Member Nov 1, 2007 #1 Hi All, how to protect 78L05 from being short circuit ? should i use diode between output and input terminals ?.....what is the value of the diode Thank you
Hi All, how to protect 78L05 from being short circuit ? should i use diode between output and input terminals ?.....what is the value of the diode Thank you
ericgibbs Well-Known Member Most Helpful Member Nov 1, 2007 #2 watzmann said: Hi All, how to protect 78L05 from being short circuit ? should i use diode between output and input terminals ?.....what is the value of the diode Thank you Click to expand... hi, The 78L05 has inbuilt short circuit protection, see jpg The diode across the 78L05 is to protect it from a reverse voltage. Usually a 1N4001 diode would do the job. EDIT: this 2nd jpg shows more detail, I realise its a LM317, but it shows the purpose of the diodes. Last edited: Jul 7, 2008
watzmann said: Hi All, how to protect 78L05 from being short circuit ? should i use diode between output and input terminals ?.....what is the value of the diode Thank you Click to expand... hi, The 78L05 has inbuilt short circuit protection, see jpg The diode across the 78L05 is to protect it from a reverse voltage. Usually a 1N4001 diode would do the job. EDIT: this 2nd jpg shows more detail, I realise its a LM317, but it shows the purpose of the diodes.