May 11, 2013 #1 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 Hello sir As we know 555 astable multivibrator has a capacity to generate high frequency oscillation say 100 khz max. so what about the case if the astable design is transistorized ?
Hello sir As we know 555 astable multivibrator has a capacity to generate high frequency oscillation say 100 khz max. so what about the case if the astable design is transistorized ?
May 11, 2013 #2 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 ligo.george said: you need to use high frequency transistors for stable oscillations... Click to expand... okk so what are they ? may i know about the value ?
ligo.george said: you need to use high frequency transistors for stable oscillations... Click to expand... okk so what are they ? may i know about the value ?
May 11, 2013 #3 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 ohh i see hm kk would you please let me know about some equivalent for BF 194 ? Due to some reason i am asking about it
ohh i see hm kk would you please let me know about some equivalent for BF 194 ? Due to some reason i am asking about it
May 12, 2013 #4 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 ligo.george said: use BF494....... Click to expand... okk so by doing this how much the max.frequency i can get by transistorized design ?
ligo.george said: use BF494....... Click to expand... okk so by doing this how much the max.frequency i can get by transistorized design ?
May 12, 2013 #5 G godfreyl Advanced Member level 5 Joined Apr 18, 2012 Messages 1,974 Helped 632 Reputation 1,266 Reaction score 621 Trophy points 1,393 Activity points 12,772 What frequency do you want? It's easy to make a 100MHz oscillator with a BC547 transistor.
May 12, 2013 #6 rajaram04 Advanced Member level 3 Joined Jun 17, 2012 Messages 871 Helped 6 Reputation 12 Reaction score 5 Trophy points 1,298 Location earth Activity points 7,687 godfreyl said: What frequency do you want? It's easy to make a 100MHz oscillator with a BC547 transistor. Click to expand... ohh dats nice so its possible ?
godfreyl said: What frequency do you want? It's easy to make a 100MHz oscillator with a BC547 transistor. Click to expand... ohh dats nice so its possible ?