This is my idea for my first electronics project. I'm having a hard time trying to figure out what I need in order to make this happen. I am looking for reading material, equations, design concepts in order for me to achieve this.
Since I work in television, I've used a Q-BOX for years now. The other day I was repairing some equipment and realized I have not done any DIY project or used my basic electronics 'skills' since I took courses in college. Then I realized, wouldn't it be cool to make my own tone generator and mic/line tester? So I've been doing some web browsing and I found some articles and schematics but I'm not too sure if they cater to me.
I was wondering if anyone can point me into the right direction to my concept below:
Mic/Line Level - IN : it would be a XLR-F for input with a visual LED VU meter (LM3916 or LM3915), what would I need to have 20 LEDs?
Pretty much I am going to be taking the LINE out of given device into this box and testing levels. A gain-control POT would be nice to setup level (thinking of a gain/trim pot from a mixer to set my level to 0dB). Same idea but with the option of adding a 1/4 jack, so I have the option of going XLR and TRS in (balanced and unbalanced)
I know there is an impedance difference between MIC/LINE level - so I'm not sure if I can use the same circuit or if I need a switch in order to select when I'm going Line In or Mic In - I know mixers have different input jacks. I want to go the same route if that's standard.
Tone generator/Oscillator - Would love the option of messing with the waveform (Sine, Square, Triangle) - Maybe just sine and square, or maybe just a sine wave. I wouldn't mind just having the options to switch over to have fun with this box. Tone generator would need a level POT to control the output level. I've read that people add a frequency selections involving 250HZ, 500HZ, and 1kHZ. I would love that. Just to go that route.
This is pretty much want I want in this box at the moment. It will be traveling with me when I work shows and what not. Would love to see if I can get pointed into the right direction.
I've never designed a circuit before. Just used schematics that I've found. I don't have experience with design and math equations (I know OHMS law though) but if I can get anything from you guys, I am entirely grateful.
Thanks for reading.
Since I work in television, I've used a Q-BOX for years now. The other day I was repairing some equipment and realized I have not done any DIY project or used my basic electronics 'skills' since I took courses in college. Then I realized, wouldn't it be cool to make my own tone generator and mic/line tester? So I've been doing some web browsing and I found some articles and schematics but I'm not too sure if they cater to me.
I was wondering if anyone can point me into the right direction to my concept below:
Mic/Line Level - IN : it would be a XLR-F for input with a visual LED VU meter (LM3916 or LM3915), what would I need to have 20 LEDs?
Pretty much I am going to be taking the LINE out of given device into this box and testing levels. A gain-control POT would be nice to setup level (thinking of a gain/trim pot from a mixer to set my level to 0dB). Same idea but with the option of adding a 1/4 jack, so I have the option of going XLR and TRS in (balanced and unbalanced)
I know there is an impedance difference between MIC/LINE level - so I'm not sure if I can use the same circuit or if I need a switch in order to select when I'm going Line In or Mic In - I know mixers have different input jacks. I want to go the same route if that's standard.
Tone generator/Oscillator - Would love the option of messing with the waveform (Sine, Square, Triangle) - Maybe just sine and square, or maybe just a sine wave. I wouldn't mind just having the options to switch over to have fun with this box. Tone generator would need a level POT to control the output level. I've read that people add a frequency selections involving 250HZ, 500HZ, and 1kHZ. I would love that. Just to go that route.
This is pretty much want I want in this box at the moment. It will be traveling with me when I work shows and what not. Would love to see if I can get pointed into the right direction.
I've never designed a circuit before. Just used schematics that I've found. I don't have experience with design and math equations (I know OHMS law though) but if I can get anything from you guys, I am entirely grateful.
Thanks for reading.