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Topics - Mcentee2

#1
Hi all,

I have a new Madbean Current Lover 2015 and the sweep didn't sound very "sweepy", so have got my multimeter out that is capable of frequency measurement and have the following at the *lowest* point of the Clock trim, ms times are worked out using "ms=stages/(freq in khz * 2)"

High: 620 khz = 0.82ms
Low:  170 khz = 3.01ms

These numbers go through the LM 311 Pin 7 and into the MN3007 Pins 2 and 6, and the low side freq of 170 khz seems a bit high, leading to a very narrow sweep of 0.82 - 3.01 ms.

With Filter matrix on I get even worse on the low end, but I know that the circuit LFO and "Filter/Matrix" are different :)

Range Fully CCW: 600 khz = 0.85 ms
Range Fully CW:   266 khz = 1.92 ms

I was expecting something more .8ms  - 7ms or so, freqs 70khz - 600khz for a MN3007 1024 stage bbd

I also have a Boss HF-2 as well and that seems to operate "by the book", with sweeps from 40 - 500 khz so I know my multimeter is ok.

Voltages measured today with a 9.2v Battery, pdf figure is first, my figure is second. I have put a * next to the ones I think are "dodgy":

IC1   4558   
1   4.59   4.46
2   4.59   4.47
3   4.18   4.05
4   0   0
5   4.51   4.38
6   4.55   0
7   4.53   4.42
8   9.13   8.87

IC2   MN3007   
1   9.13          8.86
2   ~4.45   4.27
3   ~4.85   4.75
4   41mV   380mv *********
5   0   
6   ~4.45   4.37
7   ~4.2          4.87
8   ~4.2          4.9

IC3   CD4049   
1   9   8.8
2   4.5   4.38
3   4.5   4.38
4   4.5   4.38
5   4.53   4.38
6   4.5   4.35
7   4.5   4.36
8   0   0
9   4.5   4.36
10   4.5   4.36
11   4.5   4.36
12   4.5   4.36
13   ignore   
14   4.5   4.28
15   4.5   4.33
16   ignore   

IC4   CD4013   
1   4.53        4.34
2   4.53        4.34
3   varies   4.7-5.3
4   0   
5   4.5        4.35
6   0   
7   0   
8   0   
9   0   
10   0   
11   0   
12   9        0  ****** are these two a typo ?
13   0        8.75  ***** are these two a typo ?
14   9        8.75

IC5   LM324   
1   varies   7.46
2   ~4.2   4.07
3   varies   4
4   9   8.69
5   0   
6   0   
7   7.8           0   **********   Looks very odd!
8   varies   2
9   varies   2
10   varies   2
11   0   
12   ~4.2       3.9
13   ~4.2           3.9
14   varies   4

IC6   LM311   
1   0   0
2   varies   
3   varies   
4   0   0
5   9.14   8.69
6   9.14   8.69
7   varies   
8   9.14   8.69

IC7   4558   
1   4.55   4.36
2   4.55   4.36
3   4.55   4.36
4   0   
5   4.51   4.3
6   4.55   4.3
7   4.55   4.3
8   9.14   8.67


I have checked some components around those areas but all seem ok, I will continue to check values, but any guidance would be appreciated.

Thankyou
#2
Search hasn't thrown up anything conclusive hence the question.

I have bought a premade *2015* Current Lover which does not appear to have a Road Rage built in.

So it is the MN3007 only version that as standard runs on 9v.

Just to see/hear the difference (if any) is it OK to run the pedal from a dedicated 12v wall wart ?

If so them does it need to be  a Regulated one, or will a standard pedal type one be OK ?

My thoughts are that a normal 12v supply straight into the jackshiuld be fine, as the MN3007 is rated for 15v and the unregulated 12v supply gives a bit of leeway - but I would appreciate confirmation of that !

Many thanks

(Edited to remove earlier mention of 15v as I have now found and read the 2015 pdf!)